InChI=1S/C27H42O4/c1-15-7-10-27(30-14-15)16(2)24-23(31-27)12-20-18-6-5-17-11-21(28)22(29)13-26(17,4)19(18)8-9-25(20,24)3/h5,15-16,18-24,28-29H,6-14H2,1-4H3