Using O=C=Nc1ccccc1, Cc1cc2c(s1)CC(=O)N(C)S2(=O)=O to produce Cc1cc2c(s1)C(C(=O)Nc1ccccc1)C(=O)N(C)S2(=O)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.