Using Cn1c(=O)n(CC(C)(C)C)c2ccc(C3=CC4CNCC4C3)nc21, O=C(O)c1ccon1 to produce Cn1c(=O)n(CC(C)(C)C)c2ccc(C3=CC4CN(C(=O)c5ccon5)CC4C3)nc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.