6547
Utilizing atypical wake - promoting agent modafinil ( inactive in both rH ( 3 ) and hH ( 3 ) binding assays ) as a launching pad , a series of sulfinyl - and sulfone - derived H ( 3 ) receptor inverse agonists were developed .
 Chemical: modafinil; Chemical: sulfinyl; Chemical: sulfone
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: modafinil; Chemical: sulfinyl; Chemical: sulfone