Using COc1cc(OC)c2c(c1Br)CN(Cc1ccc(Cl)cc1)C2=O to produce COc1cc2c(c(OC)c1)CN(Cc1ccc(Cl)cc1)C2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.