preferred_name: N(alpha)-acetyl-L-alanine + L-alanyl-L-alanine => N(alpha)-acetyl-L-alanyl-L-alanyl-L-alanine + H2O
preferred_name_lc: n(alpha)-acetyl-l-alanine + l-alanyl-l-alanine => n(alpha)-acetyl-l-alanyl-l-alanyl-l-alanine + h2o
label: N(alpha)-acetyl-L-alanine + L-alanyl-L-alanine => N(alpha)-acetyl-L-alanyl-L-alanyl-L-alanine + H2O
label_lc: n(alpha)-acetyl-l-alanine + l-alanyl-l-alanine => n(alpha)-acetyl-l-alanyl-l-alanyl-l-alanine + h2o