摘要:
Provided is a compound of formula (I): or a stereoisomer or tautomer thereof, or a pharmaceutically acceptable salt of any of the foregoing, wherein A, B, X1, X2, X3, and X4are as defined herein. Also provided is a pharmaceutically acceptable composition comprising a compound of formula (I), or a stereoisomer or tautomer thereof, or a pharmaceutically acceptable salt of any of the foregoing. Also provided are methods of using a compound of formula (I), or a stereoisomer or tautomer thereof, or a pharmaceutically acceptable salt of any of the foregoing.