9394
Alkyl substituted 2 ' - benzoylpyridine thiosemicarbazone chelators with potent and selective anti - neoplastic activity : novel ligands that limit methemoglobin formation .
 Chemical: Alkyl substituted 2 ' - benzoylpyridine thiosemicarbazone
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: Alkyl substituted 2 ' - benzoylpyridine thiosemicarbazone