User: I'm looking for the SMILES of a molecule that can be described as:
The molecule is a phosphatidylcholine 42:0 in which the acyl groups specified at positions 1 and 2 are tetracosanoyl and octadecanoyl respectively. It derives from an octadecanoic acid and a tetracosanoic acid.
Assistant: This is a molecule that fits this description: CCCCCCCCCCCCCCCCCCCCCCCC(=O)OC[C@H](COP(=O)([O-])OCC[N+](C)(C)C)OC(=O)CCCCCCCCCCCCCCCCC
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#}
CCCCCCCCCCCCCCCCCCCCCCCC(=O)OC[C@H](COP(=O)([O-])OCC[N+](C)(C)C)OC(=O)CCCCCCCCCCCCCCCCC
[(2R)-2-octadecanoyloxy-3-tetracosanoyloxypropyl] 2-(trimethylazaniumyl)ethyl phosphate
The molecule is a phosphatidylcholine 42:0 in which the acyl groups specified at positions 1 and 2 are tetracosanoyl and octadecanoyl respectively. It derives from an octadecanoic acid and a tetracosanoic acid.