2,3-dioxo-L-gulonate <=> 2-carboxy-L-lyxonolactone
2,3-dioxo-l-gulonate <=> 2-carboxy-l-lyxonolactone
2,3-dioxo-L-gulonate <=> 2-carboxy-L-lyxonolactone
2,3-dioxo-l-gulonate <=> 2-carboxy-l-lyxonolactone