Using O=C1c2ccccc2C(=O)N1CCCCCBr, CCCC(C(=O)OCC)C(=O)OCC to produce CCCC(CCCCCN1C(=O)c2ccccc2C1=O)(C(=O)OCC)C(=O)OCC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.