InChI=1S/C16H15N3O6S/c17-13(21)5-4-10(9-26(24)25)14(16(22)23)18-15-11(8-20)7-12-3-1-2-6-19(12)15/h1-8,18,26H,9H2,(H2,17,21)(H,22,23)/b5-4+,14-10-