Using O=C1c2ccccc2C(=O)N1O, OCc1nc2cnc3cc(Br)ccc3c2s1 to produce O=C1c2ccccc2C(=O)N1OCc1nc2cnc3cc(Br)ccc3c2s1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.