Xylostayn or Xylostein: How To spell?

The word Xylostayn is misspelled against Xylostein, a noun meaning "A glucoside found in the poisonous berries of a species of honeysuckle (Lonicera xylosteum), and extracted as a bitter, white, crystalline substance."

Word contains consecutive vowels 'EI' in between alphabets xylost & n is misspelled as 'AY'
Wrong Spelling:  xylost-ay-n 
Correct Spelling:  xylost-ei-n 
Find more incorrect spellings of Xylostein to spell right way.