Using CCOC(=O)c1cnn(-c2ncc(Br)cc2Cl)c1C, C=CB1OC(C)(C)C(C)(C)O1 to produce C=Cc1cnc(-n2ncc(C(=O)OCC)c2C)c(Cl)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.