InChI=1S/C24H22N2O5/c1-16(24(30)31)12-22(28)25-23(29)20-15-26(18-10-6-3-7-11-18)19(14-21(20)27)13-17-8-4-2-5-9-17/h2-11,14-16H,12-13H2,1H3,(H,30,31)(H,25,28,29)/t16-/m0/s1