Sinapoleec or Sinapoleic: How To spell?

The word Sinapoleec is misspelled against Sinapoleic, an adjective meaning "pertaining to mustard oil; specifically, designating an acid the oleic acid series said to occur in mistard oil."

Word contains consecutive vowels 'EI' in between alphabets sinapol & c is misspelled as 'EE'
Wrong Spelling:  sinapol-ee-c 
Correct Spelling:  sinapol-ei-c 
Find more incorrect spellings of Sinapoleic to spell right way.