6749
Considerable development in the design of cantharidin analogs , in combination with mechanistic studies , has laid a foundation for transforming novel antitumor drugs into the clinic .
 Chemical: cantharidin
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: cantharidin