preferred_name: 2-ethyl-L-serine <=> (2S)-2-aminobutanoate + formaldehyde
preferred_name_lc: 2-ethyl-l-serine <=> (2s)-2-aminobutanoate + formaldehyde
label: 2-ethyl-L-serine <=> (2S)-2-aminobutanoate + formaldehyde
label_lc: 2-ethyl-l-serine <=> (2s)-2-aminobutanoate + formaldehyde