InChI=1S/C10H12N2O11S/c13-2-4-7(23-24(19,20)21)6(15)8(22-4)12-3(9(16)17)1-5(14)11-10(12)18/h1,4,6-8,13,15H,2H2,(H,16,17)(H,11,14,18)(H,19,20,21)