13572
Utilizing an aminonitrile intermediate , the stereochemistry at C ( 3 ) of the yohimbinoid skeleton can be controlled effectively in a Pictet - Spengler reaction .
 Chemical: aminonitrile
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: aminonitrile