InChI=1S/C28H28N4O7/c1-14(2)22(38-16(4)33)23-29-19-11-7-5-9-17(19)25(35)30(23)21-13-28(39-26(21)36)18-10-6-8-12-20(18)31-24(34)15(3)32(37)27(28)31/h5-12,14-15,21-22,27,37H,13H2,1-4H3