InChI=1S/C21H36O7/c1-2-3-4-7-15(23)10-11-18-17(19(25)12-20(18)26)8-5-6-9-21(27)28-14-16(24)13-22/h5-6,10-11,15-20,22-26H,2-4,7-9,12-14H2,1H3/b6-5-,11-10+/t15-,16+,17+,18-,19+,20-/m1/s1