InChI=1S/C20H32O7/c1-2-3-6-9-15(25-24)12-13-20(23)16(17-14-18(20)27-26-17)10-7-4-5-8-11-19(21)22/h4,7,12-13,15-18,23-24H,2-3,5-6,8-11,14H2,1H3,(H,21,22)/b7-4-,13-12+/t15-,16-,17-,18+,20?/m0/s1