Using Cn1cc(-c2ccc3ncc(C(O)c4c(F)cc5ncccc5c4F)n3n2)cn1 to produce Cn1cc(-c2ccc3ncc(C(=O)c4c(F)cc5ncccc5c4F)n3n2)cn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.