User: I'm looking for the SMILES of a molecule that can be described as:
The molecule is a dicarboxylic acid monoanion. It is a conjugate base of a methotrexate. It is a conjugate acid of a methotrexate(2-).
Assistant: This is a molecule that fits your description: CN(Cc1cnc2nc(N)nc(N)c2n1)c1ccc(C(=O)N[C@@H](CCC(=O)O)C(=O)[O-])cc1
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#}
CN(Cc1cnc2nc(N)nc(N)c2n1)c1ccc(C(=O)N[C@@H](CCC(=O)O)C(=O)[O-])cc1
CN(CC1=CN=C2C(=N1)C(=NC(=N2)N)N)C3=CC=C(C=C3)C(=O)N[C@@H](CCC(=O)O)C(=O)[O-]
(2S)-2-[[4-[(2,4-diaminopteridin-6-yl)methyl-methylamino]benzoyl]amino]-5-hydroxy-5-oxopentanoate
The molecule is a dicarboxylic acid monoanion. It is a conjugate base of a methotrexate. It is a conjugate acid of a methotrexate(2-).