Using [NH4+], CSC(=N)Cc1ccc(CN2C(=O)c3cccc(NC(=O)c4ccc(Cl)s4)c3C2=O)cc1 to produce N=C(N)Cc1ccc(CN2C(=O)c3cccc(NC(=O)c4ccc(Cl)s4)c3C2=O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.