Task: Please answer the following question about the molecule with SMILES CN(C)CCCN1c2ccccc2Sc2ccc(Cl)cc21.
Request: Please provide a description of this drug's mechanism of action.
Completion: Serotonin 2a (5-HT2a) receptor antagonist
Task: Please answer the following question about the molecule with {SMILES__description} {SMILES#}.
{#Description|Question|Request!}: {quest#}
{#Result|Answer|Completion!}: {answ#}
CN(C)CCCN1c2ccccc2Sc2ccc(Cl)cc21
CN(C)CCCN1c2ccccc2Sc2ccc(Cl)cc21
3-(8-chlorophenothiazin-10-yl)-N,N-dimethylpropan-1-amine
Please provide a description of this drug's mechanism of action.