17-hydroxy-3-oxo-17alpha-pregn-4-ene-7alpha,21-dicarboxylic acid, 7-(1-methylethyl) ester, monopotassium salt
17-hydroxy-3-oxo-17alpha-pregn-4-ene-7alpha,21-dicarboxylic acid, 7-(1-methylethyl) ester, monopotassium salt