Using CCN1C(c2nnc(-c3ccccc3)o2)=C(O)c2ccccc2S1(=O)=O, O=C(O)C1CCCC1 to produce CCN1C(c2nnc(-c3ccccc3)o2)=C(OC(=O)C2CCCC2)c2ccccc2S1(=O)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.