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The modifications observed by ( 1 ) H NMR , and the amounts of catabolites excreted by the parasites after treatment with the compounds , suggested that the catabolic mechanism could depend on the structure of the side chains linked to the aza - scorpiand macrocycles .
 Chemical: ( 1 ) H; Chemical: aza
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: ( 1 ) H; Chemical: aza