20534
AhCmC occupies two distinct conformations , both distorted relative to the natural substrate ACV , in order to accommodate the extra methylene group in the second residue .
 Chemical: AhCmC; Chemical: ACV; Chemical: methylene
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: AhCmC, ACV, methylene 
Answer:
 Chemical: AhCmC; Chemical: ACV; Chemical: methylene