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/h3-11,21H,1-2H3,(H,19,20,22)/f/h19H 2B7218E377F13B3E