Using CC(=O)OC(C)=O, Cc1cc(N)ccc1N1C(=O)c2ccccc2C1=O to produce CC(=O)Nc1ccc(N2C(=O)c3ccccc3C2=O)c(C)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.