Using C=CCBr, CCOC(=O)C(C)(C)Oc1ccc2[nH]c(C)c(CCc3ccc(Cl)cc3)c2c1 to produce C=CCn1c(C)c(CCc2ccc(Cl)cc2)c2cc(OC(C)(C)C(=O)OCC)ccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.