Using O=C(O)c1cnc(Br)s1, Cc1ccc(-c2csc(NC(=O)c3cnc(N)s3)n2)cc1 to produce Cc1ccc(-c2csc(NC(=O)c3cnc(NC(=O)c4cnc(Br)s4)s3)n2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.