InChI=1S/C13H15FN4O3/c14-9-3-1-8(2-4-9)11-12(19)21-6-5-18(11)7-10-15-13(20)17-16-10/h1-4,11-12,19H,5-7H2,(H2,15,16,17,20)/t11-,12-/m0/s1