Using COC(=O)C(NC(=O)OC(C)(C)C)c1cccc(O)c1, OC1CCOCC1 to produce COC(=O)C(NC(=O)OC(C)(C)C)c1cccc(OC2CCOCC2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.