Using O=C(c1cc(Br)c(O)c(Br)c1)N1CCOc2ccncc21 to produce O=C(c1cc(Br)c([O-])c(Br)c1)N1CCOc2ccncc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.