preferred_name: L-alanyl-L-threonine + H2O => L-threonine + L-alanine
preferred_name_lc: l-alanyl-l-threonine + h2o => l-threonine + l-alanine
label: L-alanyl-L-threonine + H2O => L-threonine + L-alanine
label_lc: l-alanyl-l-threonine + h2o => l-threonine + l-alanine