Without embedding any fonts, the resulting LRF is 3,777 KB. The LRF does not view with eBook Library or LRFViewer. The reason I think is that the HTML used is abysmal. It's some of the worst HTML I have seen in a long time.
Unless you plan on sorting out this HTML code, my suggestion is to use Book Designer to convert it to LRTF after using Mobi2OEB to explode it
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