InChI=1S/C16H18N2O6S2/c1-24-13(21)5-9-8-26-15(18-14(9)16(22)23)11(7-19)17-12(20)6-10-3-2-4-25-10/h2-4,7,11,15,18H,5-6,8H2,1H3,(H,17,20)(H,22,23)/t11-,15-/m1/s1