Using Clc1ccc(-c2cn(Cc3ccccc3)c3c2CNCC3)cc1, OCCCBr to produce OCCCN1CCc2c(c(-c3ccc(Cl)cc3)cn2Cc2ccccc2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.