InChI=1/C18H16N2O4S/c1-12-6-8-15(9-7-12)25(23,24)20-19-18(22)16-10-13-4-2-3-5-14(13)11-17(16)21/h2-11,20-21H,1H3,(H,19,22)/f/h19H 4C3AD2494073BC94