2-ethyl-L-serine => (2S)-2-aminobutanoate + formaldehyde
2-ethyl-l-serine => (2s)-2-aminobutanoate + formaldehyde
2-ethyl-L-serine => (2S)-2-aminobutanoate + formaldehyde
2-ethyl-l-serine => (2s)-2-aminobutanoate + formaldehyde