InChI=1/C16H16N2O4/c19-13-12-8-10(6-7-11(12)15(21)18-16(13)22)17-14(20)9-4-2-1-3-5-9/h6-9H,1-5H2,(H,17,20)(H,18,21,22)/f/h17-18H	2A28E34F07D73E27