Using CS(=O)(=O)c1ccc(C(CC2CCOCC2)c2ccc(-c3cc(CO)ccn3)[nH]2)cc1 to produce CS(=O)(=O)c1ccc(C(CC2CCOCC2)c2ccc(-c3cc(C=O)ccn3)[nH]2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.