InChI=1S/C11H15NO10/c13-6(14)2-1-5(9(19)20)12-10(21)11(22,3-7(15)16)4-8(17)18/h5,22H,1-4H2,(H,12,21)(H,13,14)(H,15,16)(H,17,18)(H,19,20)