InChI=1S/C28H38O3/c1-17-19-6-7-22-26(3,20(19)15-21(30)24(17)31)11-13-28(5)23-14-18(16-29)8-9-25(23,2)10-12-27(22,28)4/h6-7,15,18,23,29,31H,8-14,16H2,1-5H3/t18-,23+,25+,26-,27+,28-/m0/s1