Using CCOC(=O)[C@@](C)(CCn1cc(C2=CCCCC2)cn1)S(C)(=O)=O to produce CCOC(=O)[C@@](C)(CCn1cc(C2CCCCC2)cn1)S(C)(=O)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.