Using [I-], CC(C)(C)OC(=O)N1CCC(CCOC(=O)OCCl)CC1 to produce CC(C)(C)OC(=O)N1CCC(CCOC(=O)OCI)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.