17731
Synthesis of tetrazole analogues of phosphonohydroxamic acids : an attempt to improve the inhibitory activity against the DXR .
 Chemical: phosphonohydroxamic acids
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: phosphonohydroxamic acids