Using Cc1cccnc1-c1cccc(N)c1, CC(C)(C)OC(=O)NC(=S)NC(=O)OC(C)(C)C to produce Cc1cccnc1-c1cccc(N=C(NC(=O)OC(C)(C)C)NC(=O)OC(C)(C)C)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.