InChI=1/C18H17N2O5S/c1-3-4-12-25-14-8-10-15(11-9-14)26(23,24)20-17-13(2)6-5-7-16(17)18(21)19-22/h5-11H,12H2,1-2H3,(H2-,19,20,21,22)/q-1/f/h19-20H 3BD03E3C57194491