InChI=1/C14H11FN2O4/c1-21-14-5-2-10(7-12(14)15)16-8-9-6-11(17(19)20)3-4-13(9)18/h2-8,18H,1H3/p-1/fC14H10FN2O4/h18h/q-1 70012A414D2BBDAC