Using CSc1nc(-c2ccncc2)nn1-c1ccc(N)cc1, Cc1ccsc1C=O to produce CSc1nc(-c2ccncc2)nn1-c1ccc(NCc2sccc2C)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.