Using CCCC[Sn](CCCC)(CCCC)c1ccc2c(c1)-c1c3c(c4c([nH]c5ccccc54)c1C2)C(=O)NC3, II to produce O=C1NCc2c3c(c4[nH]c5ccccc5c4c21)Cc1ccc(I)cc1-3, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.