Using Cc1c(N)ccc2c1ncn2C(=O)OC(C)(C)C, S=C(Oc1ccccn1)Oc1ccccn1 to produce Cc1c(N=C=S)ccc2c1ncn2C(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.