InChI=1S/C26H36O4/c1-18(2)9-6-10-19(3)11-7-12-20(4)13-8-14-21(5)15-16-22-25(29)23(27)17-24(28)26(22)30/h9,11,13,15,17,27,30H,6-8,10,12,14,16H2,1-5H3/b19-11+,20-13+,21-15+