User: Can you give me the SMILES of a molecule that is not penetrating the blood brain barrier?
Assistant: Yes, here you go: CC1(C)S[C@@H]2C(NC(=O)[C@H](NC(=O)c3c[nH]c4cccnc4c3=O)c3ccccc3)C(=O)N2[C@H]1C(=O)O
User: Can you {#give me|create|generate!} the {SMILES__description} of a molecule that is {penetrate_BBB#not &NULL}{penetrate_BBB__names__adjective}?
Assistant: {#Yes|Of course|Sure|Yes, I'm happy to help!}, here you go: {SMILES#}