(17β)-2-Methoxy(1,4,16,16,17-H)estra-1(10),2,4-triene-3,17-diol;(17β)-2-Methoxy(1,4,16,16,17-H)estra-1,3,5(10)-triene-3,17-diol;Estra-1(10),2,4-triene-1,4,16,16,17-d-3,17-diol, 2-methoxy-, (17β)-;Estra-1,3,5(10)-triene-1,4,16,16,17-d-3,17-diol, 2-methoxy-, (17β)-