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