Using ClCc1ccccn1, COc1cc2ncnc(-c3nnn[nH]3)c2cc1OC to produce COc1cc2ncnc(-c3nnnn3Cc3ccccn3)c2cc1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.