Using COC(=O)c1ccc(C2CCC3(CC2)OCCO3)nc1, CC(=O)OC(C)(C)C to produce CC(C)(C)OC(=O)CC(=O)c1ccc(C2CCC3(CC2)OCCO3)nc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.