InChI=1/C18H18N4O4/c1-12-6-8-13(9-7-12)21-11-10-14(18(21)24)17(23)20-19-15-4-2-3-5-16(15)22(25)26/h2-9,14,19H,10-11H2,1H3,(H,20,23)/t14-/m0/s1/f/h20H AFD76B3871779FF5