InChI=1S/C15H15NO12/c17-4-2-1-3-5(6(4)18)15(26,13(24)16-3)14(25)28-12-9(21)7(19)8(20)10(27-12)11(22)23/h1-2,7-10,12,17-21,26H,(H,16,24)(H,22,23)