InChI=1S/C16H19FN2O4/c17-12-4-6-13(7-5-12)22-11-15-9-8-14(23-15)3-1-2-10-19(21)16(18)20/h4-7,14-15,21H,2,8-11H2,(H2,18,20)/t14-,15+/m1/s1