InChI=1S/C30H25N3O4/c34-25-14-12-23(13-15-25)27-19-33-28(26(31-27)17-20-6-2-1-3-7-20)32-30(37-36,29(33)35)18-21-10-11-22-8-4-5-9-24(22)16-21/h1-16,19,26,31,34,36H,17-18H2/t26-,30-/m0/s1