Using C1CCOC1, CC(=O)ON(CCOCCO)C(=O)OC(C)(C)CCc1ccccc1 to produce COCCOCCN(OC(C)=O)C(=O)OC(C)(C)CCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.