Using O=C(N=C=S)c1ccccc1, Nc1c(Br)cc(F)cc1Br to produce O=C(NC(=S)Nc1c(Br)cc(F)cc1Br)c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.