657
1 alpha - acetoxy - 5 alpha , 7 beta - dihydroxycassa - 11 , 13 ( 15 ) - diene - 16 , 12 - lactone , a new cassane - type diterpene was isolated from Caesalpinia crista .
 Chemical: 1 alpha - acetoxy - 5 alpha , 7 beta - dihydroxycassa - 11 , 13 ( 15 ) - diene - 16 , 12 - lactone; Chemical: cassane; Chemical: diterpene
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: 1 alpha - acetoxy - 5 alpha , 7 beta - dihydroxycassa - 11 , 13 ( 15 ) - diene - 16 , 12 - lactone; Chemical: cassane; Chemical: diterpene