InChI=1/C15H20N2O4/c1-3-4-15(14(20)21)5-6-17(9-15)13(19)12-7-11(8-16-12)10(2)18/h7-8,16H,3-6,9H2,1-2H3,(H,20,21)/p-1/t15-/m1/s1/fC15H19N2O4/q-1 BE78F141CC4877E0