InChI=1S/C16H15NO11/c18-6-2-1-4-8(9(6)20)7(19)3-5(17-4)15(26)28-16-12(23)10(21)11(22)13(27-16)14(24)25/h1-3,10-13,16,18,20-23H,(H,17,19)(H,24,25)