7939
Scaffold hopping was used to optimize the isoxazolecarbaldehyde human acrosin inhibitors and extend their structure - activity relationships .
 Chemical: isoxazolecarbaldehyde
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: isoxazolecarbaldehyde 
Answer:
 Chemical: isoxazolecarbaldehyde