InChI=1S/C28H28N4O4/c1-6-27(4,5)28-18-12-8-10-14-20(18)31(16(3)33)26(28)32-21(22(28)34)23-29-19-13-9-7-11-17(19)25(36)30(23)15(2)24(32)35/h6-15,21-22,26,34H,1H2,2-5H3/t15-,21+,22+,26+,28+/m1/s1