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