Using COC(=O)c1c(OC)ccc2ccccc12, COc1cc(C)cc(OC)c1OC to produce COc1cc(C)c(C(=O)c2c(OC)ccc3ccccc23)c(OC)c1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.