InChI=1S/C18H14N2O9S2/c21-14(18(24)25)19-16-12(17(22)23)9-5-6-28-10(13(9)30-16)7-29-15-8-3-1-2-4-11(8)31(26,27)20-15/h1-4,10H,5-7H2,(H,19,21)(H,22,23)(H,24,25)/t10-/m0/s1