1 EZT (17beta)-17-{(E)-2-[2-(trifluoromethyl)phenyl]vinyl}estra-1(10),2,4-triene-3,17-diol 1.000 2 7EE (14beta,17alpha)-21-(4-aminophenyl)-19-norpregna-1(10),2,4-trien-20-yne-3,17-diol 0.848