Using O=C(NCc1ccc(Cl)cc1)c1cnc2ccc(CN3CCOCC3)cc2c1O, CCC(O)CSCC(O)CC to produce CCSCCn1cc(C(=O)NCc2ccc(Cl)cc2)c(=O)c2cc(CN3CCOCC3)ccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.