6432
The gas - phase structures of five conformers of diisopropyl ketone were optimized using ab initio calculations at the MP2 / 6 - 311 + + G ( d , p ) level of theory .
 Chemical: diisopropyl ketone
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: diisopropyl ketone 
Answer:
 Chemical: diisopropyl ketone