15007
Nitroso / oxime metabolite formation from secondary alkylamines has been proposed to occur through two possible pathways : ( 1 ) sequential N - dealkylation , N - hydroxylation , and dehydrogenation ( primary hydroxylamine pathway ) or ( 2 ) N - hydroxylation with dehydrogenation to yield a nitrone followed by N - dealkylation ( secondary hydroxylamine pathway ) .
 Chemical: Nitroso; Chemical: oxime; Chemical: alkylamines; Chemical: N; Chemical: N; Chemical: primary hydroxylamine; Chemical: N; Chemical: nitrone; Chemical: N; Chemical: secondary hydroxylamine
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: Nitroso; Chemical: oxime; Chemical: alkylamines; Chemical: N; Chemical: N; Chemical: primary hydroxylamine; Chemical: N; Chemical: nitrone; Chemical: N; Chemical: secondary hydroxylamine