Using O=Cc1ccccc1, COC(=O)c1ccc(Cn2ccc3ccccc32)cc1 to produce COC(=O)c1ccc(Cn2cc(Cc3ccccc3)c3ccccc32)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.