Using CS(=O)(=O)Cl, CSc1cc(C)nc(SC)c1NC(=O)CN1CCN(CCO)CC1 to produce CSc1cc(C)nc(SC)c1NC(=O)CN1CCN(CCOS(C)(=O)=O)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.