24029
1 - ( 7 - Azabenzobicyclo [ 2 . 2 . 1 ] heptane ) diazen - 1 - ium - 1 , 2 - diolate ( 16 ) was designed with the expectation that it would act as a dual nitric oxide ( NO ) and nitroxyl ( HNO ) donor that is not carcinogenic or genotoxic .
 Chemical: 1 - ( 7 - Azabenzobicyclo [ 2 . 2 . 1 ] heptane ) diazen - 1 - ium - 1 , 2 - diolate; Chemical: nitric oxide; Chemical: NO; Chemical: nitroxyl; Chemical: HNO
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: 1 - ( 7 - Azabenzobicyclo [ 2 . 2 . 1 ] heptane ) diazen - 1 - ium - 1 , 2 - diolate, nitric oxide, NO, nitroxyl, HNO 
Answer:
 Chemical: 1 - ( 7 - Azabenzobicyclo [ 2 . 2 . 1 ] heptane ) diazen - 1 - ium - 1 , 2 - diolate; Chemical: nitric oxide; Chemical: NO; Chemical: nitroxyl; Chemical: HNO