Using O=C(NCc1ccc(Cl)cc1)c1cnc2sc(CO)cc2c1O, CCCI to produce CCCn1cc(C(=O)NCc2ccc(Cl)cc2)c(=O)c2cc(CO)sc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.