C3.5h8
The nearest, almost round figures are found when you double the pseudo- (experimentally found ratio-) numbers:C 3.407*2=6.814, best rounded: 7H 4.53*2=9.106, best rounded: 9O 3.406*2=6.812, best rounded: 7So the most likely outcome for this compound formula will be C7H9O7. However this is not according to ascorbic acid's ratio 3:4:3 (C6H8O6) and even further away from the dehydro-ascorbic acid ratio 1:1:1: (C6H6O6)