Task: Please answer the following question about the molecule with SMILES Cl.NC1=NCC2c3ccccc3Cc3ccccc3N12.
Question: Please provide a description of this drug's mechanism of action.
Completion: Histamine H1 receptor antagonist
Task: Please answer the following question about the molecule with {SMILES__description} {SMILES#}.
{#Description|Question|Request!}: {quest#}
{#Result|Answer|Completion!}: {answ#}
Cl.NC1=NCC2c3ccccc3Cc3ccccc3N12
Cl.NC1=NCC2c3ccccc3Cc3ccccc3N12
2,4-diazatetracyclo[12.4.0.02,6.07,12]octadeca-1(18),3,7,9,11,14,16-heptaen-3-amine;hydrochloride
Please provide a description of this drug's mechanism of action.
Histamine H1 receptor antagonist