8452
Synthesis and SAR of novel Re / 99mTc - labeled benzenesulfonamide carbonic anhydrase IX inhibitors for molecular imaging of tumor hypoxia .
 Re, 99mTc, benzenesulfonamide
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 Re, 99mTc, benzenesulfonamide