InChI=1S/C15H18N2O7S/c1-8-4-5-10(13(18)19)11(6-8)12-16-14(20)15(3,17-12)9(2)7-24-25(21,22)23/h4-6,9H,7H2,1-3H3,(H,18,19)(H,16,17,20)(H,21,22,23)