Using CCOC(=O)c1c(Cl)nc(-c2ccccc2)nc1-c1ccc(Cl)cc1Cl, OB(O)c1ccccc1 to produce CCOC(=O)c1c(-c2ccccc2)nc(-c2ccccc2)nc1-c1ccc(Cl)cc1Cl, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.