InChI=1S/C18H18N2O7S2/c21-8-1-2-9(22)12-6(8)4-17-16(27)20-13-7(10(23)3-11(24)14(13)25)5-18(20,29-28-17)15(26)19(12)17/h1-2,6-7,9,11-14,22,24-25H,3-5H2/t6-,7+,9+,11+,12+,13+,14+,17?,18?/m1/s1