Using Cl, CCOC(=O)c1cn(CCNC(=O)OC(C)(C)C)c(Br)c1-c1cccc(F)c1 to produce CCOC(=O)c1c(-c2cccc(F)c2)c(Cl)n2c1CNCC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.