User: I'm looking for the SMILES of a molecule that can be described as:
The molecule is a cyclic tetrapyrrole anion obtained by the deprotonation of the four carboxy functions of Fe-coproporphyrin III. It has a role as a cofactor. It is a cyclic tetrapyrrole anion and a tetracarboxylic acid anion. It is a conjugate base of a Fe-coproporphyrin III.
Assistant: This is a molecule that fits your description: CC1=C(CCC(=O)[O-])c2cc3[n-]c(cc4nc(cc5[n-]c(cc1n2)c(CCC(=O)[O-])c5C)C(C)=C4CCC(=O)[O-])c(CCC(=O)[O-])c3C.[Fe]
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#}
CC1=C(CCC(=O)[O-])c2cc3[n-]c(cc4nc(cc5[n-]c(cc1n2)c(CCC(=O)[O-])c5C)C(C)=C4CCC(=O)[O-])c(CCC(=O)[O-])c3C.[Fe]
iron;3-[8,12,17-tris(2-carboxylatoethyl)-3,7,13,18-tetramethylporphyrin-21,23-diid-2-yl]propanoate
The molecule is a cyclic tetrapyrrole anion obtained by the deprotonation of the four carboxy functions of Fe-coproporphyrin III. It has a role as a cofactor. It is a cyclic tetrapyrrole anion and a tetracarboxylic acid anion. It is a conjugate base of a Fe-coproporphyrin III.