InChI=1S/C22H34O4/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-18-16-19(23)17-20(24)21(18)22(25)26/h7-8,16-17,23-24H,2-6,9-15H2,1H3,(H,25,26)/b8-7+