Caffene or Caffeine: How To spell?

The word Caffene is misspelled against Caffeine, a noun meaning "A white, bitter, crystallizable substance, obtained from coffee. It is identical with the alkaloid theine from tea leaves, and with guaranine from guarana."

Word contains consecutive vowels 'EI' in between alphabets caff & ne is misspelled as 'E' as letter 'I' is phonetically ignored
Wrong Spelling:  caff-e-ne 
Correct Spelling:  caff-ei-ne 
Explore spell check of Caffeine to spell without errors.