InChI=1S/C17H20O11/c18-9(19)6-8(15(23)24)13(7-4-2-1-3-5-7)27-17-12(22)10(20)11(21)14(28-17)16(25)26/h1-5,8,10-14,17,20-22H,6H2,(H,18,19)(H,23,24)(H,25,26)