InChI=1S/C16H15N3O7S/c20-9-17-16(24)19-27(25,26)11-7-5-10(6-8-11)18-14(21)12-3-1-2-4-13(12)15(22)23/h1-8,20H,9H2,(H,18,21)(H,22,23)(H2,17,19,24)