Using O=C1c2ccccc2C(=O)N1Cc1cnc(SCc2c(F)ccc(F)c2F)n1-c1ccc(F)cc1 to produce NCc1cnc(SCc2c(F)ccc(F)c2F)n1-c1ccc(F)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.