Using COC(=O)c1ccccc1CN1C(=O)C2(COc3cc4c(cc32)CCO4)c2ccccc21 to produce O=C(O)c1ccccc1CN1C(=O)C2(COc3cc4c(cc32)CCO4)c2ccccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.