28487
3 - Hydroxy - 3 - methylglutaryl coenzyme A reductase inhibitors ( statins ) exert pleiotropic effects on the cardiovascular system , in part through a decrease in reactive oxygen species ( ROS ) formation and reduction of vascular inflammation .
 Chemical: 3 - Hydroxy - 3 - methylglutaryl coenzyme A; 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: 3 - Hydroxy - 3 - methylglutaryl coenzyme A; Chemical: oxygen