14375
Spectrophotometric data in the UV - visible range indicates that hydroxyl groups on the B - ring of flavonols are essential for reactivity with cisplatin .
 hydroxyl, flavonols, cisplatin
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 hydroxyl, flavonols, cisplatin