InChI=1/C19H20N2O5S/c1-10-18(22)21-13-7-11(5-6-16(13)27-10)19(23)20-12-8-14(24-2)17(26-4)15(9-12)25-3/h5-10H,1-4H3,(H,20,23)(H,21,22)/t10-/m0/s1/f/h20-21H 87A198E4EEE3C773