19835
Screening of our sample collection led to the identification of a set of benzofurano [ 3 , 2 - d ] pyrimidine - 2 - one hits acting as nucleotide - competing HIV - 1 reverse transcriptase inhibitiors ( NcRTI ) .
 Chemical: benzofurano [ 3 , 2 - d ] pyrimidine - 2 - one; 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 ] pyrimidine - 2 - one; Chemical: nucleotide