Synonyms: C(14a)-Homo-27-norgammacer-14-ene-3,21-dione(8CI); Serratenedione (7CI);1H-Cyclohepta[1,2-a:5,4-a']dinaphthalene-3,11(2H,4H)-dione,4a,5,6,6a,7,9,9a,10,12,13,13a,13b,14,15,15a,15b-hexadecahydro-4,4,6a,10,10,13a,15b-heptamethyl-,[4aR-(4aa,6ab,9ab,13aa,13bb,15aa,15bb)]-; Cathaya G