Q: What is the classification of this molecule? Please respond with Small Molecule, Protein, Antibody, Oligosaccharide, Oligonucleotide, Cell, Enzyme, Gene, or Unknown.
 The Compound has the SMILES N[C@@H](CSCC(=O)O)C(=O)O.
Answer: Small molecule
{#Question|Q!}: {quest#}
{#Constraint:|Description:|!} The {#Molecule|Compound|Chemical!} {#has the|can be represented with the!} {SMILES__description} {SMILES#}.
{#Answer|Result|Answer!}: {answ#}
N[C@@H](CSCC(=O)O)C(=O)O
N[C@@H](CSCC(=O)O)C(=O)O
(2R)-2-amino-3-(carboxymethylsulfanyl)propanoic acid
What is the classification of this molecule? Please respond with Small Molecule, Protein, Antibody, Oligosaccharide, Oligonucleotide, Cell, Enzyme, Gene, or Unknown.
Small molecule