依普利酮

Methyl (4As,4Br,5As,6As,7R,9As,9Br,10R)-4A,6A-Dimethyl-2,5'-Dioxo-2,4,4',4A,5',5A,6,6A,8,9,9A,9B,10,11-Tetradecahydro-3H,3'H-Spiro[Cyclopenta[7,8]Phenanthro[4B,5-B]Oxirene-7,2'-Furan]-10-Carboxylate