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In the present study , we chemically synthesized novel 17 - fluorinated steroids and evaluated the cytotoxicity profiles of these compounds in T47D breast cancer cells compared to the activity of known antiprogestins , including ZK230 211 , RU - 486 , CDB2914 , CDB4124 and ORG33628 .
 Chemical: 17 - fluorinated steroids; Chemical: antiprogestins; Chemical: ZK230 211; Chemical: RU - 486; Chemical: CDB2914; Chemical: CDB4124; Chemical: ORG33628
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: 17 - fluorinated steroids; Chemical: antiprogestins; Chemical: ZK230 211; Chemical: RU - 486; Chemical: CDB2914; Chemical: CDB4124; Chemical: ORG33628