InChI=1S/C15H18O12/c1-25-6-3-4(7(17)13(21)22)2-5(16)11(6)26-15-10(20)8(18)9(19)12(27-15)14(23)24/h2-3,7-10,12,15-20H,1H3,(H,21,22)(H,23,24)