InChI=1S/C29H28N2O5/c1-6-28(2,3)26-19(15-11-7-9-13-17(15)30-26)20-22(32)24(35-5)21-25(23(20)34-4)36-27-29(21,33)16-12-8-10-14-18(16)31-27/h6-14,27,30-33H,1H2,2-5H3/t27-,29-/m1/s1