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The essential oil of roots , branches , leaves , flowers and fruits of Periploca laevigata Aiton subsp . angustifolia ( Apocynaceae ) from Lampedusa Island has been obtained by hydrodistillation and its composition analysed .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None