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In our continuous studies on the chemistry of the endophytic fungus Penicillium griseoroseum , an endophyte isolated from fruits of Coffea arabica , we isolated clavatol , a dimethylated tetraketide , and its dimer which appears to be a novel natural compound .
 Chemical: clavatol; Chemical: dimethylated tetraketide
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: clavatol; Chemical: dimethylated tetraketide