InChI=1S/C29H56O4/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19-20-21-22-23-24-25-29(32)33-27-28(31)26-30/h14-15,28,30-31H,2-13,16-27H2,1H3/b15-14-/t28-/m1/s1