InChI=1S/C17H20O11/c1-25-8-5-3-7(4-6-9(18)19)13(26-2)14(8)27-17-12(22)10(20)11(21)15(28-17)16(23)24/h3-6,10-12,15,17,20-22H,1-2H3,(H,18,19)(H,23,24)