Using CCOC(=O)C(CCOCCBr)c1c(Cl)cccc1I, C#CC(OCC)(OCC)OCC to produce CCOC(=O)C1(c2c(Cl)cccc2C#CC(OCC)(OCC)OCC)CCOCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.