fructose 5-dehydrogenase (NADP+); 5-ketofructose reductase (NADP+); 5-keto-D-fructose reductase (NADP+); fructose 5-(nicotinamide adenine dinucleotide phosphate) dehydrogenase; D-(-)fructose:(NADP+) 5-oxidoreductase; fructose 5-dehydrogenase (NADP+)