InChI=1S/C18H26O12/c19-9(5-8-1-3-10(20)11(21)6-8)2-4-12(22)28-7-29-18-15(25)13(23)14(24)16(30-18)17(26)27/h1,3,6,9,13-21,23-27H,2,4-5,7H2