InChI=1S/C15H13N3O4S2/c19-13(20)7-4-16-9(14(21)22)6-23-12(7)8-5-18-10-2-1-3-11(10)24-15(18)17-8/h4-5,12H,1-3,6H2,(H,19,20)(H,21,22)/t12-/m1/s1