Using CC(=O)O[C@@H]1C=C[C@@H](NC(=O)OC(C)(C)C)CC1 to produce CC(C)(C)OC(=O)N[C@@H]1C=C[C@@H](O)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.