Synonyms: 1H-Cyclopenta[5,6]naphtho[1,2-g]quinazoline,chol-2-eno[3,2-d]pyrimidine deriv.; 1H-Cyclopenta[5,6]naphtho[1,2-g]quinazoline,2,3,3a,3b,4,5,5a,6,11,11a,11b,12,13,13a-tetradecahydro-11a,13a-dimethyl-1-(1-methylbutyl)-,[1R-[1a(R*),3ab,3ba,11aa,11bb,13aa]]-; [1R-[1a(R*),3ab,3ba,11aa,11bb,13aa]]-2,3,3a,3b,4,5,5a,6,11,11a,11b,12,13,13a-Tetradecahydro-11a,13a-dimethyl-1-(1-methylbutyl)-1H-cyclopenta[5,6]naphtho[1,2-g]quinazoline