Using N#Cc1c(N)nc2[nH]c(=O)[nH]c(=O)c2c1-c1ccccc1, Cl to produce N#Cc1c(Cl)nc2[nH]c(=O)[nH]c(=O)c2c1-c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.