Using O=C(O)CCS, CS(=O)c1ncc(C(=O)Nc2ccc(F)cc2)cn1 to produce O=C(O)CCSc1ncc(C(=O)Nc2ccc(F)cc2)cn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.