User: I'm searching for the SMILES of a molecule that can be described as:
The molecule is an azamacrocyle in which four nitrogen atoms at positions 1, 4, 7 and 10 of a twelve-membered ring are each substituted with a carboxymethyl group. It has a role as a chelator. It derives from a hydride of a 1,4,7,10-tetraazacyclododecane.
Assistant: This is a molecule that fits your description: O=C(O)CN1CCN(CC(=O)O)CCN(CC(=O)O)CCN(CC(=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#}
O=C(O)CN1CCN(CC(=O)O)CCN(CC(=O)O)CCN(CC(=O)O)CC1
2-[4,7,10-tris(carboxymethyl)-1,4,7,10-tetrazacyclododec-1-yl]acetic acid
The molecule is an azamacrocyle in which four nitrogen atoms at positions 1, 4, 7 and 10 of a twelve-membered ring are each substituted with a carboxymethyl group. It has a role as a chelator. It derives from a hydride of a 1,4,7,10-tetraazacyclododecane.