a solid dispersion comprising: a compound represented by Formula (I) or pharmaceutically acceptable salt thereof,
and a pharmaceutically acceptable polymer, wherein the pharmaceutically acceptable polymer is hydroxypropylmethyl cellulose acetate succinate; and
one or more anilinic substances, wherein the one or more anilinic substances, is present in an amount equal to or less than about 10% by weight based on the weight of the compound of Formula (I) present in the composition,
and wherein water is present in the composition in an amount of no more than about 6% by weight based on the total weight of the pharmaceutical composition.