InChI=1S/C15H18O9/c16-9(17)6-8(7-4-2-1-3-5-7)23-15-12(20)10(18)11(19)13(24-15)14(21)22/h1-5,8,10-13,15,18-20H,6H2,(H,16,17)(H,21,22)