8232
For two derivatives the X - ray wave function refinement was performed to evaluate the character of bonds in the NBF ( 2 ) O moiety by topological and integrated bond descriptors .
 Chemical: NBF ( 2 ) O
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: NBF ( 2 ) O