Using CC(C)(C)OC(=O)NC1(c2ccc(C3=C(c4ccccc4)c4ccccc4C3=O)cc2)CCC1 to produce NC1(c2ccc(C3=C(c4ccccc4)c4ccccc4C3=O)cc2)CCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.