User: I need a molecule that is not self-heating.
Assistant: Here is a molecule that is not self-heating: C=C[C@H]1COC(=O)O1.
User: I need a molecule that is {H251#not &NULL}{H251__names__adjective}.
Assistant: Here is a molecule that is {H251#not &NULL}{H251__names__adjective}: {SMILES#}.