19834
Identification of benzofurano [ 3 , 2 - d ] pyrimidin - 2 - ones , a new series of HIV - 1 nucleotide - competing reverse transcriptase inhibitors .
 Chemical: benzofurano [ 3 , 2 - d ] pyrimidin - 2 - ones; Chemical: nucleotide
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: benzofurano [ 3 , 2 - d ] pyrimidin - 2 - ones; Chemical: nucleotide