Using CC1(C)C(=O)C(C)(C)C1=O, CC(C)C(O)C(C)(C)CO to produce CC(C)C(=O)C(C)(C)C(=O)OCC(C)(C)C(O)C(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.