Using CCOC(=O)c1cc(-c2cccc(O)c2)n(-c2cccc(Cl)c2)n1, CC(=O)OCCCBr to produce CCOC(=O)c1cc(-c2cccc(OCCCOC(C)=O)c2)n(-c2cccc(Cl)c2)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.