21777
According to the current understanding in the EU , a biosimilar is a copy version of an already authorized biopharmaceutical ( or reference product ) with similar biologic activity , physicochemical characteristics , efficacy , and safety , based on a full comparability exercise at quality , preclinical and clinical level to ensure similar efficacy and safety .
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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:
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