InChI=1S/C31H52O/c1-20(2)21(3)10-11-22(4)23-14-18-31(9)25-12-13-26-28(5,6)27(32)16-17-29(26,7)24(25)15-19-30(23,31)8/h15,22-23,25-27,32H,10-14,16-19H2,1-9H3/t22-,23-,25?,26+,27+,29-,30-,31+/m1/s1