Using CCc1c(C(=O)O)c(=O)c2ncccc2n1Cc1ccccc1Sc1ccc(Cl)cc1 to produce O=C(O)c1cn(Cc2ccccc2Sc2ccc(Cl)cc2)c2cccnc2c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.