Using CCOC(=O)CBr, CCOC(=O)c1sc2cc(OCc3ccc(Cl)cc3Cl)ccc2c1O to produce CCOC(=O)COc1c(C(=O)OCC)sc2cc(OCc3ccc(Cl)cc3Cl)ccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.