InChI=1S/C29H54/c1-3-5-7-9-11-13-15-17-19-21-23-25-27-29-28-26-24-22-20-18-16-14-12-10-8-6-4-2/h3,14,16,18,20H,1,4-13,15,17,19,21-29H2,2H3/b16-14-,20-18-