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Surprisingly , the incorporation of the metal complex in the hydrogelator results in the nanofibers , formed by the self - assembly of the hydrogelator in water , to have the width of a single molecule of the hydrogelator .
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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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