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The use of 2D INADEQUATE and ( 15 ) N NMR for the unambiguous structure elucidation of the reaction products is discussed in this manuscript .
 Chemical: ( 15 ) N
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: ( 15 ) N