10899
There were synthesized new types of ribbon type steroidal dimers derived from three types of steroidal skeletons ( cholic acid , etienic acid , estrone ) using Cu ( I ) catalyzed 1 , 3 - dipolar cycloaddition reaction .
 Chemical: cholic acid; Chemical: etienic acid; Chemical: estrone; Chemical: Cu ( I )
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: cholic acid; Chemical: etienic acid; Chemical: estrone; Chemical: Cu ( I )