11712
During antibacterial evaluation , compound 13 stood out as the most active of the series , showing a selective activity against the gram positive pathogenic methicillin - resistant S . aureus ( MRSA , MIC = 6 mu Mu ) , with a bacteriostatic effect .
 Chemical: methicillin
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: methicillin 
Answer:
 Chemical: methicillin