LY 117018 [ LY 139478,6-hydroxy-2-(4-hydroxyphenyl)benzo(b)thien-3-yl 4-(2-(1-pyrrolidinyl)ethoxy) phenyl ketone,LY-117018,LY-139478,LY117018,Lilly 117018 ] from Eli Lilly; less estrogenic & more estrogen-antagonistic than tamoxifen & trioxifene in rats & mice; LY 139478 is the HCl salt of LY 117018; LY 139478 is an estrogen agonist; structure in first so