Using O=Cc1ccco1, Nc1cccc2c1C(=O)N(C1CCC(=O)NC1=O)C2=O to produce O=C1CCC(N2C(=O)c3cccc(NCc4ccco4)c3C2=O)C(=O)N1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.