InChI=1S/C15H16N2O8S/c18-12(19)6-11(25-26(22,23)24)14-13-8(5-10(17-14)15(20)21)7-3-1-2-4-9(7)16-13/h1-4,10-11,14,16-17H,5-6H2,(H,18,19)(H,20,21)(H,22,23,24)