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Structure and Absolute Configuration of Methyl ( 3R ) - Malonyl - ( 13S ) - hydroxycheilanth - 17 - en - 19 - oate , a Sesterterpene Derivative from the Roots of Aletris farinosa .
 Chemical: Methyl ( 3R ) - Malonyl - ( 13S ) - hydroxycheilanth - 17 - en - 19 - oate; Chemical: Sesterterpene
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
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Answer:
 Chemical: Methyl ( 3R ) - Malonyl - ( 13S ) - hydroxycheilanth - 17 - en - 19 - oate; Chemical: Sesterterpene