12214
Altogether , our findings support a model in which Top2 beta deficiency promotes CPT - induced apoptosis in quiescent non - S - phase cells , possibly due to RNAP LS depletion and p53 accumulation .
 Chemical: CPT
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: CPT