InChI=1S/C26H42O4/c1-5-9-10-11-15-22(14-6-2)20-30-26(28)24-17-13-12-16-23(24)25(27)29-19-18-21(7-3)8-4/h12-13,16-17,21-22H,5-11,14-15,18-20H2,1-4H3