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Enantioresolution of chiral derivatives of xanthones on ( S , S ) - Whelk - O1 and L - phenylglycine stationary phases and chiral recognition mechanism by docking approach for ( S , S ) - Whelk - O1 .
 Chemical: xanthones; Chemical: L - phenylglycine
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: xanthones; Chemical: L - phenylglycine