Using COc1ccc(OC)c(CBr)c1, NC(=O)c1cc(O)ccc1NC=O to produce COc1ccc(OC)c(COc2ccc(NC=O)c(C(N)=O)c2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.