1537
Density functional studies illustrate that noncovalent functionalization of isoniazid ( INH ) is preferred over covalent attachment , exhibiting low adsorption energy values , HOMO - LUMO gap and comparison of quantum molecular descriptors performed in ( 5 , 5 ) and ( 9 , 0 ) SWNT systems .
 Chemical: isoniazid; Chemical: INH
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: isoniazid; Chemical: INH