Using CCOC(=O)CN(C(=O)NCc1ccc(C)cc1)c1ccc(C)cc1 to produce Cc1ccc(CN2C(=O)CN(c3ccc(C)cc3)C2=O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.