InChI=1S/C26H21N3O5/c30-20-10-6-18(7-11-20)15-26(34-33)25(32)29-16-23(19-8-12-21(31)13-9-19)27-22(24(29)28-26)14-17-4-2-1-3-5-17/h1-13,16,30-31,33H,14-15H2/t26-/m0/s1