1031
Dihydroxy - isosteviol methyl ester ( DIME ) , the principal biological compound isolated from the medicinal plant Pulsatilla nigricans ( Fam : Ranunculaceae ) having the molecular formula of C21 H34 O3 ( molecular weight 334 . 25 ) , was administered to cervical cancer cells ( HeLa ) in vitro to evaluate its possible apoptotic ( anti - cancer ) potentials .
 Chemical: Dihydroxy - isosteviol methyl ester; Chemical: DIME; Chemical: C21 H34 O3
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: Dihydroxy - isosteviol methyl ester; Chemical: DIME; Chemical: C21 H34 O3