preferred_name: D-threonine(out) + L-alanine(in) = D-threonine(in) + L-alanine(out)
preferred_name_lc: d-threonine(out) + l-alanine(in) = d-threonine(in) + l-alanine(out)
label: D-threonine(out) + L-alanine(in) = D-threonine(in) + L-alanine(out)
label_lc: d-threonine(out) + l-alanine(in) = d-threonine(in) + l-alanine(out)