Using O=C([O-])[O-], CN1C(=O)C(Br)=C(c2c[nH]c3ccccc23)C1=O to produce CN1C(=O)C(Br)=C(c2cn(C)c3ccccc23)C1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.