InChI=1/C19H17N3O5/c1-9-8-12-13(16(23)22(9)2)19(14(15(20)27-12)17(24)26-3)10-6-4-5-7-11(10)21-18(19)25/h4-8H,20H2,1-3H3,(H,21,25)/t19-/m0/s1/f/h21H 6781939BB03D1BB6