9,11alpha-Epoxy-17-hydroxy-3-oxo-17alpha-pregn-4-ene-7alpha,21-dicarboxylic acid, gamma-lactone, Methyl Ester
9,11alpha-epoxy-17-hydroxy-3-oxo-17alpha-pregn-4-ene-7alpha,21-dicarboxylic acid, gamma-lactone, methyl ester