11673
Albatrelin F ( 6 ) was isolated as a pair of C - 2 ' tautomers with a ratio of 1 . 3 : 1 .
 Chemical: Albatrelin F
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: Albatrelin F 
Answer:
 Chemical: Albatrelin F