InChI=1S/C23H20N2O5S/c26-22(24-21-11-4-3-10-20(21)23(27)28)17-8-5-9-19(14-17)31(29,30)25-13-12-16-6-1-2-7-18(16)15-25/h1-11,14H,12-13,15H2,(H,24,26)(H,27,28)