1-Methyl-6-(1-oxo-3-(4-phenyl-1-piperazinyl)propyl)-3,4-dihydrocarbostyril monooxalate 2(1H)-Quinolinone, 3,4-dihydro-1-methyl-6-(1-oxo-3-(4-phenyl-1-piperazinyl)propyl)-, ethanedioate (1:1) 80845-35-8