InChI=1S/C19H26O8/c1-5-24-9-12-15-13(25-11(2)20)8-18(4)14(21)6-7-17(3,23)10-19(15,27-18)26-16(12)22/h13,23H,5-10H2,1-4H3/t13-,17+,18+,19+/m0/s1