Using COc1ccc(Cc2nnc(Cl)c3ccccc23)cc1, OB(O)c1ccccc1 to produce COc1ccc(Cc2nnc(-c3ccccc3)c3ccccc23)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.