Using COC(=O)COc1ccc(-c2cc(=O)cc(N3CCOCC3)o2)c2c1Sc1ccccc1S2 to produce O=C([O-])COc1ccc(-c2cc(=O)cc(N3CCOCC3)o2)c2c1Sc1ccccc1S2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.