InChI=1/C18H18N2O4/c1-11-3-4-12(2)14(9-11)20-18(22)17(21)19-13-5-6-15-16(10-13)24-8-7-23-15/h3-6,9-10H,7-8H2,1-2H3,(H,19,21)(H,20,22)/f/h19-20H 47AA653356E55615