InChI=1S/C19H16N2O7S/c22-12-3-1-9(7-14(12)28-29(24,25)26)18-17-16-13(27-18)4-2-11-15(16)10(8-21-11)5-6-20-19(17)23/h1-4,7-8,17-18,21-22H,5-6H2,(H,20,23)(H,24,25,26)