30538
The Claisen - Schmidt reaction of 22 beta - hydroxy - 3 - oxoolean - 12 - en - 28 - oic acid ( 5 ) with requisite aldehydes afforded 2 - arylidene - 22 beta - hydroxy - 3 - oxoolean - 12 - en - 28 - oic acids ( 7 - 16 ) .
 Chemical: 22 beta - hydroxy - 3 - oxoolean - 12 - en - 28 - oic acid; Chemical: aldehydes; Chemical: 2 - arylidene - 22 beta - hydroxy - 3 - oxoolean - 12 - en - 28 - oic acids
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: 22 beta - hydroxy - 3 - oxoolean - 12 - en - 28 - oic acid; Chemical: aldehydes; Chemical: 2 - arylidene - 22 beta - hydroxy - 3 - oxoolean - 12 - en - 28 - oic acids