8964
Infrared multiphoton dissociation ( IRMPD ) spectroscopy has been used to record IR signatures of chirality recognition in the protonated serine dimer and octamer in the 3200 - 3800 cm ( - 1 ) region .
 Chemical: serine
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: serine 
Answer:
 Chemical: serine