Using BrCc1ccncc1, Cc1nc(SCc2c(F)ccc(F)c2F)n(-c2ccc(F)cc2)c1C(C)O to produce Cc1nc(SCc2c(F)ccc(F)c2F)n(-c2ccc(F)cc2)c1C(C)OCc1ccncc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.