7113
Compound 1c has shown slightly better antibacterial activity against B . subtilis and compounds 5c , 6c and 7c have shown excellent antibacterial activity against S . typhimurium in compare to reference drugs Ampicillin and Kanamycin .
 Chemical: Ampicillin; Chemical: Kanamycin
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: Ampicillin; Chemical: Kanamycin