Using O=CO, CCOC(=O)CSc1ccc2c(-c3ccccc3F)noc2c1Cl to produce CCOC(=O)CS(=O)c1ccc2c(-c3ccccc3F)noc2c1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.