Using O=Cc1ccc(B(O)O)cc1, CCSc1ncc2cc(-c3ccccc3)c(Cl)nc2n1 to produce CCSc1ncc2cc(-c3ccccc3)c(-c3ccc(C=O)cc3)nc2n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.