2778
In contrast , doses of 1 mg / kg BN 52021 given 30 min before or 10 mg / kg administered 5 min before i . v . injection of bupivacaine were ineffective .
 Chemical: BN 52021; Chemical: bupivacaine
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Chemical: BN 52021; Chemical: bupivacaine