InChI=1S/C27H48O4/c1-16(5-8-23(30)17(2)15-28)20-6-7-21-25-22(10-12-27(20,21)4)26(3)11-9-19(29)13-18(26)14-24(25)31/h16-25,28-31H,5-15H2,1-4H3/t16-,17?,18+,19-,20-,21+,22+,23?,24-,25+,26+,27-/m1/s1