InChI=1S/C26H48O2/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19-20-21-22-23-24-25-26(27)28/h17-18,21-22H,2-16,19-20,23-25H2,1H3,(H,27,28)/b18-17-,22-21-