Caffeene or Caffeine: How To spell?

The word Caffeene 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 'EE'
Wrong Spelling:  caff-ee-ne 
Correct Spelling:  caff-ei-ne 
Explore spell check of Caffeine to spell without errors.