Synonyms: Naphth[2',1':4,5]indeno[1,7a-b]furan,2'H-18-norandrostano[17,13-b]furan deriv.;Naphth[2',1':4,5]indeno[1,7a-b]furan,3a,4,5,5a,5b,6,7,7a,8,9,10,11,11a,11b,12,13-hexadecahydro-11a-methyl-, [5aS-(5aa,5bb,11ab,11ba,13aR*)]-; [5aS-(5aa,5bb,11ab,11ba,13aR*)]-3a,4,5,5a,5b,6,7,7a,8,9,10,11,11a,11b,12,13-Hexadecahydro-11a-methylnaphth[2',1':4,5]indeno[1,7a-b]furan