英文别名(1R,3aS,5aR,5bR,7aR,10aR,10bR,12aR,12bR)-1-Isopropenyl-5a,5b,8,8,10a-pentamethyl-9-oxooctadecahydrodicyclopenta[a,i]phenanthrene-3a(1H)-carboxylic acid; (1R,2R,5S,8R,9R,10R,13R,14R,18R)-1,2,14,17,17-pentamethyl-16-oxo-8-prop-1-en-2-ylpentacyclo[11.7.0.02,10.05,9.014,18]icosane-5-carboxylic acid; 1-Norbetulonic acid; 1-Decarboxy-3-oxo-ceathic acid; 3'H-Cyclopent[3,4]androst-3-en-18-oic acid, tetrahydro-4,5',5',9-tetramethyl-15-(1-methylethenyl)-4'-oxo-, (3β,4α,5β,8α,9β,10α,13α,14β,15β)- 
