20043
Structural elucidation of possible lutein oxidation products mediated through peroxyl radical inducer 2 , 2 ' - Azobis ( 2 - methylpropionamidine ) dihydrochloride : Antioxidant and cytotoxic influence of oxidized lutein in HeLa cells .
 Chemical: lutein; Chemical: peroxyl; Chemical: 2 , 2 ' - Azobis ( 2 - methylpropionamidine ) dihydrochloride; Chemical: lutein
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: lutein; Chemical: peroxyl; Chemical: 2 , 2 ' - Azobis ( 2 - methylpropionamidine ) dihydrochloride; Chemical: lutein