21155
The reaction proceeds with high site - and diastereoselectivity to provide aryl pyrroloindoline products in one step from simple starting materials .
 Chemical: aryl pyrroloindoline
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: aryl pyrroloindoline