InChI=1S/C27H42O4/c1-16(7-6-11-25(2,3)31)18-8-9-19-17-13-22(28)21-14-23(29)24(30)15-27(21,5)20(17)10-12-26(18,19)4/h13-14,16,18-20,23-24,29-31H,6-12,15H2,1-5H3/t16-,18-,19+,20+,23+,24-,26-,27-/m1/s1