Using COC(=O)[C@H]1C[C@H](n2cc(I)c3c(Cl)ncnc32)C1 to produce OC[C@H]1C[C@H](n2cc(I)c3c(Cl)ncnc32)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.