InChI=1S/C17H22N2O6S2/c1-17(2)15(16(21)18-22)19(9-12-26-17)27(23,24)14-7-5-13(6-8-14)25-11-4-3-10-20/h5-8,15,20,22H,9-12H2,1-2H3,(H,18,21)/t15-/m0/s1