Using CC(C)(C)OC(=O)Nc1ccc2c(c1)NC(=S)CCC2, O=C([O-])[O-] to produce CSC1=Nc2cc(NC(=O)OC(C)(C)C)ccc2CCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.