845
Compliance to niacin extended - release / lovastatin was 77 % , with 3 , 245 patients completing the study .
 Chemical: niacin extended - release / lovastatin
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Chemical: niacin extended - release / lovastatin