2-[3-oxo-2-(phenylsulfonyl)butyl]cyclopentanone InChI=1/C15H18O4S/c1-11(16)15(10-12-6-5-9-14(12)17)20(18,19)13-7-3-2-4-8-13/h2-4,7-8,12,15H,5-6,9-10H2,1H cyclopentanone, 2-[3-oxo-2-(phenylsulfonyl)butyl]-