| CPC A61K 31/4545 (2013.01) [A61P 1/04 (2018.01); A61P 19/02 (2018.01); A61P 37/06 (2018.01); C07D 401/10 (2013.01)] | 12 Claims |

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1. A compound represented by the formula:
![]() or a pharmaceutically acceptable salt or stereoisomer thereof.
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