InChI=1/C19H20N2O4/c20-18(23)19(11-16(19)17(22)21-24)10-13-6-8-15(9-7-13)25-12-14-4-2-1-3-5-14/h1-9,16,24H,10-12H2,(H2,20,23)(H,21,22)/t16-,19-/m1/s1/f/h21H,20H2	925D6B8566B9077A