Question: How can I..?

Hi I have data I want to fit it I do not know the model function I know only that the relation between X and Y is non-linear and there is six parameters I want to know their values from the fitting.can I do this using Maple or it is impossible. this is Maple work sheet: Download 7089_X0165.txt
View file details this is the input data: Download 7089_Nonlinearfit.mws
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