Using COc1cnc2[nH]c(C(=CC3CCCO3)c3ccc(S(C)(=O)=O)cc3)cc2c1 to produce COc1cnc2[nH]c(C(CC3CCCO3)c3ccc(S(C)(=O)=O)cc3)cc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.