Using Nc1ccc(F)cc1, COC(=O)c1ncc(COc2ccccc2)cc1CC=O to produce O=C1c2ncc(COc3ccccc3)cc2CCN1c1ccc(F)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.