Using O=c1ccc2c([nH]1)C(Cl)CCC2, O=c1ccc2c([nH]1)C(Br)CCC2 to produce O=c1ccc2c([nH]1)C(O)CCC2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.