20165
A chemical study of the alga Cystoseira usneoides has led to the isolation of six new meroterpenoids , cystodiones A - F ( 1 - 6 ) , together with six known related compounds ( 7 - 12 ) .
 Chemical: meroterpenoids; Chemical: cystodiones A - F
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: meroterpenoids; Chemical: cystodiones A - F