Using CCOC(=O)COc1cccc(CN2C(=O)C3(COc4cc5c(cc43)CCO5)c3ccccc32)c1 to produce O=C(O)COc1cccc(CN2C(=O)C3(COc4cc5c(cc43)CCO5)c3ccccc32)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.