Synonyms: 1H-Naphth[2',1':4,5]indeno[1,2-d]pyrimidine,estr-16-eno[17,16-d]pyrimidine deriv.;1H-Naphth[2',1':4,5]indeno[1,2-d]pyrimidine,2,3,4,4a,4b,5,6,6a,11,11a,11b,12,13,13a-tetradecahydro-6a-methyl-, [4aS-(4aa,4bb,6aa,11ab,11ba)]-; [4aS-(4aa,4bb,6aa,11ab,11ba)]-2,3,4,4a,4b,5,6,6a,11,11a,11b,12,13,13a-Tetradecahydro-6a-methyl-1H-naphth[2',1':4,5]indeno[1,2-d]pyrimidine