InChI=1S/C20H28O12/c21-8-10-11(22)16(31-20-14(25)12(23)13(24)17(32-20)18(27)28)15(26)19(30-10)29-7-6-9-4-2-1-3-5-9/h1-5,10-17,19-26H,6-8H2,(H,27,28)