Using O=C(O)CCCCBr, CCC1(c2ccccc2)C(=O)NC(=O)NC1=O to produce O=C(O)CCCCN1C(=O)NC(c2ccccc2)(c2ccccc2)C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.