InChI=1S/C21H22FN3O5/c1-12(2)20(19(27)24-16-9-17(26)29-21(16,28)11-22)10-15(25-30-20)18-14-6-4-3-5-13(14)7-8-23-18/h3-8,12,16,28H,9-11H2,1-2H3,(H,24,27)/t16-,20+,21+/m0/s1