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