InChI=1S/C20H28N2O9S2/c1-4-29-17-8-6-16(31-33(25,26)27)13-19(17)30-10-9-22-14(2)11-15-5-7-18(28-3)20(12-15)32(21,23)24/h5-8,12-14,22H,4,9-11H2,1-3H3,(H2,21,23,24)(H,25,26,27)/t14-/m1/s1