InChI=1S/C22H34O4/c1-14(2)7-6-8-15(3)16-11-12-22(4,25)18(16)13-17-19(23)9-10-20(26-5)21(17)24/h7-8,16,18,20,24-25H,6,9-13H2,1-5H3/b15-8-