InChI=1S/C28H40N2O2/c1-7-13-21-15-23(17-25(27(21)31)19-29(9-3)10-4)24-16-22(14-8-2)28(32)26(18-24)20-30(11-5)12-6/h7-8,15-18,31-32H,1-2,9-14,19-20H2,3-6H3