Using CC(C)c1ccc(Nc2cccc(C(=O)O)c2C(=O)O)cc1, NC1CCC(=O)NC1=O to produce CC(C)c1ccc(Nc2cccc3c2C(=O)N(C2CCC(=O)NC2=O)C3=O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.