InChI=1/C19H20N2O4/c1-3-24-15-7-5-4-6-13(15)20-18(22)11-17-19(23)21-14-10-12(2)8-9-16(14)25-17/h4-10,17H,3,11H2,1-2H3,(H,20,22)(H,21,23)/t17-/m0/s1/f/h20-21H ACE05FA89DFE7894