InChI=1S/C20H32O7/c21-13-7-3-4-8-15(25-24)11-12-17-16(18-14-19(17)27-26-18)9-5-1-2-6-10-20(22)23/h1,5,11-12,15-19,21,24H,2-4,6-10,13-14H2,(H,22,23)/b5-1-,12-11+/t15-,16+,17+,18-,19+/m0/s1