InChI=1S/C21H30O5/c1-3-4-5-6-7-8-9-10-11-12-13-14-15-16-18(22)21(24)19(25-2)17-20(23)26-21/h3,5-6,8-9,17,24H,1,4,7,10-16H2,2H3/b6-5+,9-8+