Using O=C(O)c1ccc(Nc2ncc(Br)n3ccnc23)cc1, NCc1ccc(O)cc1 to produce O=C(NCc1ccc(O)cc1)c1ccc(Nc2ncc(Br)n3ccnc23)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.