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