21337
The structures of these new compounds were determined on the basis of extensive one - and two - dimensional NMR spectroscopy as well as by high - resolution mass spectrometry .
 None
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:  
Answer:
 None