InChI=1/C14H18F2N2O3/c1-3-18(7-9(2)14(20)21)8-12(19)17-13-10(15)5-4-6-11(13)16/h4-6,9H,3,7-8H2,1-2H3,(H,17,19)(H,20,21)/t9-/m0/s1/f/h18-19H D0DC28B3ED692FED