The chemical with the SMILES of c1ccc2c(c1)CCN1CCNCC21 shows blood-brain barrier permeability.
The {#compound|chemical!} with the {SMILES__description} of {SMILES#} {#shows|exhibits|displays!} {p_np#no &NULL}{p_np__names__noun}.
c1ccc2c(c1)CCN1CCNCC21
c1ccc2c(c1)CCN1CCNCC21
2,3,4,6,7,11b-hexahydro-1H-pyrazino[2,1-a]isoquinoline