Using CCSCCN, O=Cc1cnc(-c2ccc(C(CC3CCOCC3)c3ccc(S(=O)(=O)C4CC4)cc3)[nH]2)s1 to produce CCSCCNCc1cnc(-c2ccc(C(CC3CCOCC3)c3ccc(S(=O)(=O)C4CC4)cc3)[nH]2)s1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.