InChI=1S/2C6H8O7.3K.3Na.H2O/c2*7-3(8)1-6(13,5(11)12)2-4(9)10;;;;;;;/h2*13H,1-2H2,(H,7,8)(H,9,10)(H,11,12);;;;;;;1H2/q;;6*+1;/p-6