InChI=1S/C31H52O/c1-9-23(20(2)3)11-10-21(4)24-14-18-31(8)27-13-12-25-22(5)28(32)16-17-29(25,6)26(27)15-19-30(24,31)7/h9,15,20-22,24-25,27-28,32H,10-14,16-19H2,1-8H3/b23-9-