Using CCC(C)c1ccc(-n2c(-c3ccc(Cl)nc3)nc3ccccc3c2=O)cc1, CB1OB(C)OB(C)O1 to produce CCC(C)c1ccc(-n2c(-c3ccc(C)nc3)nc3ccccc3c2=O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.