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The electrocatalysis comprises redox regeneration of the electrochemically created ABTS ( + ) radical either by Trolox ( 6 - hydroxy - 2 , 5 , 7 , 8 - tetramethychroman - 2 - carboxylic acid ) or by antioxidants present in studied oils .
 Chemical: ABTS ( + ); Chemical: Trolox; Chemical: 6 - hydroxy - 2 , 5 , 7 , 8 - tetramethychroman - 2 - carboxylic acid
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: ABTS ( + ); Chemical: Trolox; Chemical: 6 - hydroxy - 2 , 5 , 7 , 8 - tetramethychroman - 2 - carboxylic acid