Using COc1ccc2[nH]cc(CCCBr)c2c1, NCC1COc2ccccc2O1 to produce COc1ccc2[nH]cc(CCCNCC3COc4ccccc4O3)c2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.