Using CCn1c2ccccc2c2ccccc21, O=C1OC(=O)c2ccccc21 to produce CCn1c2ccccc2c2cc(C(=O)c3ccccc3C(=O)O)ccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.