Using CCN(c1cccc(C(=O)OC)c1C)C1CCC(C)(O)CC1, CI to produce CCN(c1cccc(C(=O)OC)c1C)C1CCC(C)(OC)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.