18690
Compounds 1 - 3 had no inhibition effect against PTP1B , an important target enzyme for the treatment of diabetes , while the dehydro derivative of 1 [ dehydroeuryspongin A ( 4 ) ] exhibited inhibitory activity ( IC ( 50 ) = 3 . 6 mu M ) .
 Chemical: dehydroeuryspongin A
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: dehydroeuryspongin A 
Answer:
 Chemical: dehydroeuryspongin A