InChI=1S/C21H26O14/c22-7-10-12(25)14(27)18(35-20-16(29)13(26)15(28)17(34-20)19(30)31)21(33-10)32-9-4-2-1-3-8(9)5-6-11(23)24/h1-6,10,12-18,20-22,25-29H,7H2,(H,23,24)(H,30,31)/b6-5+