The SMILES C[C@@H](CN1CC(=O)NC(=O)C1)N1CC(=O)NC(=O)C1 represents a molecule that is notidentified as permeable through the blood-brain barrier.
The {SMILES__description} {SMILES#} represents a molecule that is {p_np#not&NULL}identified as {p_np__names__adjective}.
C[C@@H](CN1CC(=O)NC(=O)C1)N1CC(=O)NC(=O)C1
C[C@@H](CN1CC(=O)NC(=O)C1)N1CC(=O)NC(=O)C1
4-[(2S)-2-(3,5-dioxopiperazin-1-yl)propyl]piperazine-2,6-dione