6149
Complex III contained eight molecules of cardiolipin , and complex IV contained two molecules of cardiolipin , as determined by electrospray ionization - mass spectrometry .
 cardiolipin, cardiolipin
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 cardiolipin, cardiolipin