Using CC(=O)OCc1cccc2c1nc(-c1c(F)cccc1F)n2Cc1c(F)cccc1F to produce OCc1cccc2c1nc(-c1c(F)cccc1F)n2Cc1c(F)cccc1F, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.