25479
Conformational restriction approach to BACE1 inhibitors II : SAR study of the isocytosine derivatives fixed with a cis - cyclopropane ring .
 Chemical: isocytosine; Chemical: cis - cyclopropane
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: isocytosine; Chemical: cis - cyclopropane