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A short and efficient total synthesis of naturally occurring carbazole clauraila A ( 1 ) is described .
 Chemical: carbazole; Chemical: clauraila A
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: carbazole; Chemical: clauraila A