Spiro(estra-4,9-diene-17,2'(3'H)-furan)-3-one, 11-(4-(dimethylamino)phenyl)-4',5'-dihydro-6-methyl-, (6beta,11beta,17beta)-
spiro(estra-4,9-diene-17,2'(3'h)-furan)-3-one, 11-(4-(dimethylamino)phenyl)-4',5'-dihydro-6-methyl-, (6beta,11beta,17beta)-