InChI=1/C20H17N3O5/c1-28-20-17(24)10-9-15(19(20)23(26)27)12-21-22-18(25)11-14-7-4-6-13-5-2-3-8-16(13)14/h2-10,12,24H,11H2,1H3,(H,22,25)/b21-12+/f/h22H AE71B327C811A066