InChI=1S/C7H13NO4S.C3H4O2/c1-4-6(9)8-7(3,5-2)13(10,11)12;1-2-3(4)5/h4H,1,5H2,2-3H3,(H,8,9)(H,10,11,12);2H,1H2,(H,4,5)