InChI=1/C26H24N2O4/c1-18-7-6-8-21(13-18)28(25(29)17-32-22-9-4-3-5-10-22)16-20-14-19-15-23(31-2)11-12-24(19)27-26(20)30/h3-15,20H,16-17H2,1-2H3/p+1/t20-/m1/s1/fC26H25N2O4/h27H/q+1 911F1D5726A8D09F