Using C=C[Sn](CCCC)(CCCC)CCCC, CCCCCCCc1c(C)nc(C)c(I)c1OC(=O)OC(C)(C)C to produce C=Cc1c(C)nc(C)c(CCCCCCC)c1OC(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.