User: I'm searching for the SMILES of a molecule that can be described as:
The molecule is an optically active form of allantoin having (R)-(-)-configuration. It has a role as a mouse metabolite. It is an enantiomer of a (S)-(+)-allantoin.
Assistant: This is a molecule that fits this description: NC(=O)N[C@@H]1NC(=O)NC1=O
User: I'm {#searching|looking!} for the {SMILES__description} of a molecule that can be described {#by|as!}:
{description#}
Assistant: This is a molecule that fits {#your|this!} description: {SMILES#}
[(4R)-2,5-dioxoimidazolidin-4-yl]urea
The molecule is an optically active form of allantoin having (R)-(-)-configuration. It has a role as a mouse metabolite. It is an enantiomer of a (S)-(+)-allantoin.