18740
The bound ligands are recognized by extensive hydrogen bonds at all of their hydroxyls consistent with the enzyme ' s strict substrate specificity for the LNB moiety .
 Chemical: hydrogen; Chemical: hydroxyls; Chemical: LNB
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: hydrogen; Chemical: hydroxyls; Chemical: LNB