InChI=1S/C22H26O15/c23-9-5-8(1-3-12(9)35-20-16(29)14(27)15(28)18(37-20)19(30)31)2-4-13(26)36-17-10(24)6-22(34,21(32)33)7-11(17)25/h1-5,10-11,14-18,20,23-25,27-29,34H,6-7H2,(H,30,31)(H,32,33)/b4-2+