Using COC(=O)C1CC1, CN1CCOc2ccc3c(ccn3S(=O)(=O)c3ccccc3)c2C1 to produce CN1CCOc2ccc3c(cc(C(O)C4CC4)n3S(=O)(=O)c3ccccc3)c2C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.