12350
Further QM / MM calculations on the alternative water attack predict a concerted mechanism for this reaction , where the deprotonation of water , nucleophilic attack , and epoxide ring - opening take place via the same transition state .
 Chemical: epoxide
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: epoxide 
Answer:
 Chemical: epoxide