InChI=1S/C6H8O7.C5H11NO2/c7-3(8)1-6(13,5(11)12)2-4(9)10;1-6(2,3)4-5(7)8/h13H,1-2H2,(H,7,8)(H,9,10)(H,11,12);4H2,1-3H3/p-1