18067
The content of reactive carbonyl derivates did not change with exercise , suggesting that the increased production of reactive oxygen species ( ROS ) were well tolerated in this experimental model .
 Chemical: carbonyl; Chemical: oxygen
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: carbonyl; Chemical: oxygen