User: I'm looking for the SMILES of a molecule that is not penetrating the blood brain barrier to reach the brain?
Assistant: This is a molecule that is not penetrating the blood brain barrier to reach the brain: CCCCc1oc2ccccc2c1C(=O)c1cc(I)c(OCCN(CC)CC)c(I)c1
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#}