This invention provides estrogen receptor modulators of formula (I), having the structure where R1, R2, R3, and R4 are as defined in the specification, or a pharmaceutically acceptable salt thereof.
这项发明提供了公式(I)的
雌激素受体调节剂,其结构中R1、R2、R3和R4如规范所定义,或其药学上可接受的盐。