InChI=1S/C28H25N3O7/c1-30-26(35)19-17-12-7-3-5-9-14(12)29-21(17)22-18(20(19)27(30)36)13-8-4-6-10-15(13)31(22)28-24(34)23(33)25(37-2)16(11-32)38-28/h3-10,16,23-25,28-29,32-34H,11H2,1-2H3/t16-,23-,24-,25-,28-/m1/s1