Using CCOC(=O)C(CCCCB1OC(C)(C)C(C)(C)O1)(COC(C)=O)NC(=O)OC(C)(C)C to produce CCOC(=O)C(CO)(CCCCB1OC(C)(C)C(C)(C)O1)NC(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.