InChI=1S/C28H44N4O5/c1-8-20(16-33)23-27(35)29-14-13-19-9-11-21(12-10-19)37-25(18(4)5)24(28(36)30-23)31-26(34)22(32(6)7)15-17(2)3/h9-14,17-18,20,22-25,33H,8,15-16H2,1-7H3,(H,29,35)(H,30,36)(H,31,34)/b14-13-