Using On1nnc2ccccc21, O=C(O)c1cc(F)c(-c2c(=O)ccn3c(-c4ccc(F)cc4F)cccc23)c(F)c1 to produce NC(=O)c1cc(F)c(-c2c(=O)ccn3c(-c4ccc(F)cc4F)cccc23)c(F)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.