C=CCN1CC[C@]23c4c5ccc(O)c4O[C@H]2[C@@H](O)C=C[C@H]3[C@H]1C5 represents a molecule that is penetrating the blood brain barrier to reach the brain.
{SMILES#} represents a molecule that is {penetrate_BBB#not &NULL}{penetrate_BBB__names__adjective}.