Using CCOC(=O)c1cnc2c(-c3ccc(Sc4ccccc4)cc3)cnn2c1O to produce O=C(O)c1cnc2c(-c3ccc(Sc4ccccc4)cc3)cnn2c1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.