InChI=1S/C22H34O4/c1-2-3-9-15-19(23)16-11-8-6-4-5-7-10-13-18-14-12-17-20(24)21(18)22(25)26/h11-12,14,16-17,19,23-24H,2-10,13,15H2,1H3,(H,25,26)/b16-11+