Provided are compounds of Formula (I): or a pharmaceutically acceptable salt thereof, wherein A, Z, B, R1, R2, R3, G1, G2, and G3 are as defined herein.Also provided is a pharmaceutically acceptable composition comprising a compound of Formula (I), or a pharmaceutically acceptable salt thereof.Also provided are methods of using a compound of Formula (I), or a pharmaceutically acceptable salt thereof.本發明提供式(I)化合物, 或其醫藥學上可接受之鹽,其中A、Z、B、R1、R2、R3、G1、G2及G3係如本文所定義。亦提供包含式(I)化合物或其醫藥學上可接受之鹽之醫藥學上可接受之組合物。亦提供使用式(I)化合物或其醫藥學上可接受之鹽之方法。