11627
The presence of 1 . 4 mol % of 4 - OT effected formation of the anticipated gamma - nitroaldehydes in fair to good yields with dr values of up to 93 : 7 and ee values of up to 81 % .
 Chemical: 4 - OT; Chemical: gamma - nitroaldehydes
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
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Answer:
 Chemical: 4 - OT; Chemical: gamma - nitroaldehydes