Using CON(C)C(=O)CCCCNC(=O)OC(C)(C)C, Brc1cnc2ccccc2c1 to produce CC(C)(C)OC(=O)NCCCCC(=O)c1cnc2ccccc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.