Using COc1ccc(C2(O)C(=O)N(C(c3ccccc3)c3ccccc3)c3ccccc32)c(O)c1 to produce COc1ccc(C2C(=O)N(C(c3ccccc3)c3ccccc3)c3ccccc32)c(O)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.