InChI=1S/C14H22O7/c1-8(15)5-3-2-4-6-10(16)21-13-11(17)9-7-19-14(20-9)12(13)18/h4,6,8-9,11-15,17-18H,2-3,5,7H2,1H3/t8-,9?,11?,12?,13?,14?/m1/s1