InChI=1S/C21H23N5O3S.C4H4O4/c27-20(17-8-9-17)23-21-22-19-3-1-2-18(26(19)24-21)16-6-4-15(5-7-16)14-25-10-12-30(28,29)13-11-25;5-3(6)1-2-4(7)8/h1-7,17H,8-14H2,(H,23,24,27);1-2H,(H,5,6)(H,7,8)/b;2-1-