Using O=c1oc(-c2c(F)cccc2F)nc2cc([N+](=O)[O-])ccc12 to produce Nc1ccc2c(=O)oc(-c3c(F)cccc3F)nc2c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.