6430
Noticeably , the azepine tertiary nitrogen of galantamine was in close proximity to backbone CO of Leu34 ( distance < 3 . 5 A ) to stabilize the dimer conformation .
 Chemical: azepine; Chemical: nitrogen; Chemical: galantamine; Chemical: CO; Chemical: Leu34
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: azepine; Chemical: nitrogen; Chemical: galantamine; Chemical: CO; Chemical: Leu34