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