22620
Finally , pretreatment with the antioxidant N - acetyl - L - cysteine ( NAC ) reduced the OTA - induced DNA DSBs , ATM phosphorylation , and G2 arrest .
 Chemical: N - acetyl - L - cysteine; Chemical: NAC; Chemical: OTA
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: N - acetyl - L - cysteine; Chemical: NAC; Chemical: OTA