wherein, in the formulas (a) and (b),

ring A, ring B, ring C and ring D are independently selected from

a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted terphenylyl group, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted anthryl group, a substituted or unsubstituted benzanthryl group, a substituted or unsubstituted phenanthryl group, a substituted or unsubstituted benzophenanthryl group, a substituted or unsubstituted phenalenyl group, a substituted or unsubstituted pyrenyl group, a substituted or unsubstituted chrysenyl group, a substituted or unsubstituted benzochrysenyl group, a substituted or unsubstituted triphenylenyl group, a substituted or unsubstituted benzotriphenylenyl group, a substituted or unsubstituted tetracenyl group, a substituted or unsubstituted pentacenyl group, a substituted or unsubstituted fluorenyl group, a substituted or unsubstituted 9,9′-spirobifluorenyl group, a substituted or unsubstituted benzofluorenyl group, a substituted or unsubstituted dibenzofluorenyl group, a substituted or unsubstituted fluoranethenyl group, a substituted or unsubstituted benzofluoranthenyl group, or a substituted or unsubstituted perylenyl group, or

a substituted or unsubstituted heterocyclic ring having 5 to 50 ring atoms;

two or more of ring A, ring B, ring C and ring D are heterocyclic rings; and

each of sites *a, *b, *c and *d in the formula (a) and the formula (b) represents a position of an atom, and the atoms located in the sites *a, *b, *c and *d form one substituted or unsubstituted and saturated or unsaturated six-membered ring including four atoms thereof, wherein the substituted or unsubstituted heterocylic ring having 5 to 50 ring atoms represented by ring A to ring DA independently has a structure selected from dibenzofuran, benzimidazole, indolocarbazole, pyridine, pyrazine, pyridazine, pyrimidine, triazine, quinoline, isoquinoline, quinazoline, cinnoline, phthalazine, quinoxaline, pyrrole, indole, pyrrolo[3.2.1-jk]carbazole, furan, benzofuran, thiophene, benzothiophene, pyrazole, imidazole, benzimidazole, triazole, oxazole, benzoxazole, thiazole, benzothiazole, isothiazole, benzisothiazole, thiadiazole, isoxazol, benzisoxazole, pyrrolidine, piperidine, piperazine, imidazolidine, carbazole, indro[3.2.1-jk]carbazole and dibenzothiophene, or a heterocyclic structure containing the structure thereof as a partial structure.