InChI=1S/C18H16F3N3O5/c1-17(26,10-29-14-6-4-13(5-7-14)24(27)28)16(25)23-12-3-2-11(9-22)15(8-12)18(19,20)21/h2-8,16,23,25-26H,10H2,1H3/t16-,17+/m1/s1