13007
Investigations of dipeptide structures containing pyrrolysine as N - terminal residues : a DFT study in gas and aqueous phase .
 Chemical: dipeptide; Chemical: pyrrolysine; Chemical: N
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: dipeptide; Chemical: pyrrolysine; Chemical: N