Using CCOP(=O)(OCC)c1ccsc1I, CCCC[Sn](CCCC)(CCCC)c1sccc1P(=O)(OCC)OCC to produce CCOP(=O)(OCC)c1ccsc1-c1sccc1P(=O)(OCC)OCC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.