19758
This 3 - D analysis of structural similarity enabled us to rank geoisomeric fatty acids according to cytotoxic potency , whereas a 2 - D positional assessment of cis / trans structure did not .
 Chemical: fatty acids
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: fatty acids