InChI=1S/C28H44N4O4/c1-17(2)15-23-27(34)30-18(3)11-12-21-9-7-8-10-24(21)36-19(4)16-29-25(22-13-14-22)28(35)32(6)20(5)26(33)31-23/h7-10,17-20,22-23,25,29H,11-16H2,1-6H3,(H,30,34)(H,31,33)/t18-,19?,20+,23?,25?/m0/s1