User: I'm searching 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: CC1(C)S[C@@H]2[C@H](NC(=O)[C@H](NC(=O)Nc3cnc(Nc4ccc(S(N)(=O)=O)cc4)[nH]c3=O)c3ccc(O)cc3)C(=O)N2[C@H]1C(=O)O
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#}