12421
These derivatives with suitable substitutions exhibited potent specific inhibition of human DNA TopoII alpha while not showing inhibition of topoisomerase I and DNA intercalation , despite the fact that parent indenoindolones are known poor / moderate inhibitors of topoisomerase II .
 Chemical: indenoindolones
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: indenoindolones