Using O=C(COC(=O)c1ccc(OCC2CC2)c(CN2CCOCC2)c1)OCc1ccccc1 to produce O=C(O)COC(=O)c1ccc(OCC2CC2)c(CN2CCOCC2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.