27696
However the first - pass may differently affect the pharmacological profile of organic nitrates in connection with the different extent of denitration and the distinct bioactive species generated and exported from the liver ( nitrate or nitrite ) .
 Chemical: nitrates; Chemical: nitrate; Chemical: nitrite
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: nitrates; Chemical: nitrate; Chemical: nitrite