InChI=1/C14H18N2O4/c1-8(2)12(15)13(17)16-7-11(14(18)19)20-10-6-4-3-5-9(10)16/h3-6,8,11-12H,7,15H2,1-2H3,(H,18,19)/t11-,12-/m1/s1/f/h15H D5F809A5F2F31BB4