7648
Herein , we report a surfactant - free microemulsion ( denoted as SFME ) , consisting of oleic acid ( oil phase ) , water , and n - propanol without the amphiphilic molecular structure of a traditional surfactant .
 Chemical: oleic acid; Chemical: n - propanol
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: oleic acid; Chemical: n - propanol