User: I'm looking for the SMILES of a molecule that is penetrating the blood brain barrier?
Assistant: This is a molecule that is penetrating the blood brain barrier: C[N+](C)([O-])CCCN1c2ccccc2CCc2ccccc21
User: I'm {#searching|looking!} for the {SMILES__description} of a molecule that is {penetrate_BBB#not &NULL}{penetrate_BBB__names__adjective}?
Assistant: This is a molecule that is {penetrate_BBB#not &NULL}{penetrate_BBB__names__adjective}: {SMILES#}