InChI=1/C18H20N2O4/c1-5-14-12(18(23)24-4)9-13(16(21)19-14)17(22)20-15-8-10(2)6-7-11(15)3/h6-9H,5H2,1-4H3,(H,19,21)(H,20,22)/f/h19-20H	23B1B27F2EB28F27