FELIX Model provides direct interaction between experimental 2D-NOESY spectra, molecular structures, and back-calculated 2D-NOESY spectra within a single integrated interface. FELIX Model allows you to judge the accuracy of a given model, and suggest potential new crosspeak assignments where crosspeaks have been erroneously assigned. The novel features available within FELIX Model allow you to simultaneously view and interact with molecular data in Insight II and spectra in FELIX, which will help you develop a detailed understanding of how your experimental NMR data defines actual structural features.