Using CCCC[Sn](/C=C\CO)(CCCC)CCCC, COC(=O)c1c(CS(=O)(=O)c2ccccc2Br)ccc(Br)c1OC to produce COC(=O)c1c(CS(=O)(=O)c2ccccc2C=CCO)ccc(Br)c1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.