2664
Nabumetone is a clinically used non - steroidal anti - inflammatory drug , its biotransformation includes major active metabolite 6 - methoxy - 2 - naphtylacetic acid and another three phase I as well as corresponding phase II metabolites which are regarded as inactive .
 Chemical: Nabumetone; Chemical: 6 - methoxy - 2 - naphtylacetic acid
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: Nabumetone; Chemical: 6 - methoxy - 2 - naphtylacetic acid