Using CN(CCSC1=Cc2ccccc2Sc2ccc(Cl)cc21)C(=O)Oc1ccccc1 to produce CNCCSC1=Cc2ccccc2Sc2ccc(Cl)cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.