InChI=1/C15H18N2O4/c1-11(15(20)21)10-17(7-3-6-14(18)19)13-5-2-4-12(8-13)9-16/h2,4-5,8,11H,3,6-7,10H2,1H3,(H,18,19)(H,20,21)/p-2/t11-/m1/s1/fC15H16N2O4/q-2 C3B33554BF583480