Using Cc1[nH]c2c(OCc3ccccc3)nncc2c1C, ClC(Cl)=CCBr to produce Cc1c(C)n(CC=C(Cl)Cl)c2c(OCc3ccccc3)nncc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.