Synonyms: 5,9-Cyclo-9,10-secoandrostane;Spiro[cyclohexane-1,3'(2'H)-as-indacene], decahydro-2,5'a-dimethyl-,(2R,3'aS,5'aS,8'aS,8'bS)- (9CI); Spiro[cyclohexane-1,3'(2'H)-as-indacene],decahydro-2,5'a-dimethyl-, [3'aS-[3'(S*),3'aa,5'ab,8'aa,8'bb]]-; [3'aS-[3'(S*),3'aa,5'ab,8'aa,8'bb]]-Decahydro-2,5'a-dimethylspiro[cyclohexane-1,3'(2'H)-as-indacene]