InChI=1S/C22H32O4/c1-2-3-4-6-10-15-19(23)16-11-8-5-7-9-13-18-14-12-17-20(24)21(18)22(25)26/h4,6,10,12,14-15,17,19,23-24H,2-3,5,7-9,11,13,16H2,1H3,(H,25,26)/b6-4-,15-10?