tokens: N-acetyl-L-cysteine ( NAC ) is an antioxidant molecule endowed with immunomodulatory properties .
folded_tokens: n-acetyl-l-cysteine ( nac ) is an antioxidant molecule endowed with immunomodulatory properties .
labels: B-amino_acid_monomer O B-amino_acid_monomer O O O O O O O O O O