InChI=1S/C31H50O4/c1-4-5-6-7-8-9-10-11-12-13-14-15-18-21-34-30(32)28-19-16-17-20-29(28)31(33)35-27-23-25(2)22-26(3)24-27/h22-24,28-29H,4-21H2,1-3H3