Using CCNc1nc(C)ccc1C(=O)c1cccc(Br)c1, O=C1CCCC(=O)O1 to produce CCn1c(=O)c(CCC(=O)O)c(-c2cccc(Br)c2)c2ccc(C)nc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.