This can be ashieved by tandem mass spectrometry. Several tools can help the interpretation of the relatively complex data. You can consult an interesting paper on that at  http://pubs.acs.org/doi/abs/10.1021/ac900114t

This can be ashieved by tandem mass spectrometry. Several tools can help the interpretation of the relatively complex data. You can consult an interesting paper on that at  http://pubs.acs.org/doi/abs/10.1021/ac900114t

Classically, acid hydrolysis of 1 mg of your product results in amino acids that can be derivativatized for hplc identification.   It will not give you the sequence order but will do a fair job of yielding composition by extrapolating the peak areas against a cocktail of standards.