Using CSc1ccc2cc(C(=O)c3ccccc3)cc(CCNC(C)=O)c2c1 to produce CSc1ccc2cc(Cc3ccccc3)cc(CCNC(C)=O)c2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.