Using Cc1c(CC(N)=O)c2c(O)cccc2n1Cc1ccccc1, CCOC(=O)CCCBr to produce CCOC(=O)CCCOc1cccc2c1c(CC(N)=O)c(C)n2Cc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.