(2R,3R,4R,5S,6S)-3,4,5-trihydroxy-6-(2-methyl-1'-azaspiro[[1,3]oxathiolane-5,3'-bicyclo[2.2.2]octan]-1'-yl-6-ium)tetrahydro-2H-pyran-2-carboxylate
(2R,3R,4R,5S,6S)-3,4,5-trihydroxy-6-(2-methyl-1'-azaspiro[[1,3]oxathiolane-5,3'-bicyclo[2.2.2]octan]-1'-yl-6-ium)tetrahydro-2H-pyran-2-carboxylate