Using Cc1cccc2c(OCCNC(=O)OC(C)(C)C)noc12, CSSC to produce CSc1ccc(C)c2onc(OCCNC(=O)OC(C)(C)C)c12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.