Using CC(=O)Oc1ccc(-c2cnc(-c3ccccc3)nc2Cl)cc1OC(C)=O, S to produce Oc1ccc(-c2cnc(-c3ccccc3)[nH]c2=S)cc1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.