InChI=1S/C26H40O4/c1-4-5-6-7-8-9-10-11-12-13-14-15-19-29-25(27)23-17-16-18-24(20-23)26(28)30-21-22(2)3/h13-14,16-18,20,22H,4-12,15,19,21H2,1-3H3/b14-13-