22925
Efficient synthesis of new ( R ) - 2 - amino - 1 - butanol derived ureas , thioureas and acylthioureas and in vitro evaluation of their antimycobacterial activity .
 Chemical: ( R ) - 2 - amino - 1 - butanol; Chemical: ureas; Chemical: thioureas; Chemical: acylthioureas
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: ( R ) - 2 - amino - 1 - butanol; Chemical: ureas; Chemical: thioureas; Chemical: acylthioureas