InChI=1/C15H20N4O4S/c20-14(18-19-15(21)17-12-6-7-12)11-2-1-3-13(8-11)24(22,23)16-9-10-4-5-10/h1-3,8,10,12,16H,4-7,9H2,(H,18,20)(H2,17,19,21)/f/h17-19H A2AC4EA3436EBEFD