InChI=1/C18H17N3O4S/c1-12-3-9-16(10-4-12)26(23,24)21-15-7-5-14(6-8-15)18(22)19-17-11-13(2)25-20-17/h3-11H,1-2H3,(H2,19,20,21,22)/p-1/fC18H16N3O4S/h19H/q-1 6900597BD461FB1F