Using CC(C)(C)OC(=O)N1CCC(ONC(=O)[C@@H]2CC[C@@H]3CN2C(=O)N3OCc2ccccc2)CC1 to produce CC(C)(C)OC(=O)N1CCC(ONC(=O)[C@@H]2CC[C@@H]3CN2C(=O)N3O)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.