Using O=C=Nc1c(Cl)cccc1Cl, CCOC(=O)c1cnc(SC)nc1N to produce CSc1ncc2c(=O)n(-c3c(Cl)cccc3Cl)c(=O)[nH]c2n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.