(R,S)-N-Acetyl-S-(1-(hydroxymethyl)-2-propen-1-yl)-L-cysteine + (R,S)-N-Acetyl-S-(2-hydroxy-3-buten-1-yl)-L-cysteine

(R,S)-N-Acetyl-S-(1-(hydroxymethyl)-2-propen-1-yl)-L-cysteine + (R,S)-N-Acetyl-S-(2-hydroxy-3-buten-1-yl)-L-cysteine