Using NN(C(=O)c1ccccc1)c1ccccc1, O=C1CCC(C(=O)O)(C(=O)O)CC1 to produce O=C(c1ccccc1)n1c2c(c3ccccc31)CC(C(=O)O)(C(=O)O)CC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.