InChI=1/C18H18N2O4/c1-11-4-3-5-14(10-11)18(23)24-12(2)17(22)20-15-8-6-13(7-9-15)16(19)21/h3-10,12H,1-2H3,(H2,19,21)(H,20,22)/t12-/m1/s1/f/h20H,19H2	90A50264AEBB9B66