Using C=CCBr, CC1(C(O)C(Cc2ccc(Cl)cc2)n2cncn2)COCOC1 to produce C=CCOC(C(Cc1ccc(Cl)cc1)n1cncn1)C1(C)COCOC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.