preferred_name: D-lysine(out) + L-ornithine(in) => D-lysine(in) + L-ornithine(out)
preferred_name_lc: d-lysine(out) + l-ornithine(in) => d-lysine(in) + l-ornithine(out)
label: D-lysine(out) + L-ornithine(in) => D-lysine(in) + L-ornithine(out)
label_lc: d-lysine(out) + l-ornithine(in) => d-lysine(in) + l-ornithine(out)