Using [NH4+], CCOC(=O)Cc1cn(C2Cc3c(CC(=O)OCC)cccc3C2=O)c(C(=O)OCC)n1 to produce CCOC(=O)Cc1cn2c3c([nH]c(=O)c2n1)-c1cccc(CC(=O)OCC)c1C3, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.