Synonyms: 1H-Cyclopenta[7,8]phenanthro[3,2-g]pteridine,chol-2-eno[2,3-g]pteridine deriv.; 1H-Cyclopenta[7,8]phenanthro[3,2-g]pteridine,2,3,3a,3b,4,5,5a,6,13,13a,13b,14,15,15a-tetradecahydro-13a,15a-dimethyl-1-(1-methylbutyl)-,[1R-[1a(R*),3ab,3ba,13aa,13bb,15aa]]-; [1R-[1a(R*),3ab,3ba,13aa,13bb,15aa]]-2,3,3a,3b,4,5,5a,6,13,13a,13b,14,15,15a-Tetradecahydro-13a,15a-dimethyl-1-(1-methylbutyl)-1H-cyclopenta[7,8]phenanthro[3,2-g]pteridine