23876
A novel series of 10 - hydroxyl ketolide derivatives were synthesized , during which a distinctive intermediate , 3 - O - descladinosyl - 3 - oxo - 11 - deoxy - 10 , 11 - epoxy - 6 - O - methylerythromycin A , was obtained from 6 - O - methylerythromycin A .
 Chemical: 10 - hydroxyl ketolide; Chemical: 3 - O - descladinosyl - 3 - oxo - 11 - deoxy - 10 , 11 - epoxy - 6 - O - methylerythromycin A; Chemical: 6 - O - methylerythromycin 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: 10 - hydroxyl ketolide; Chemical: 3 - O - descladinosyl - 3 - oxo - 11 - deoxy - 10 , 11 - epoxy - 6 - O - methylerythromycin A; Chemical: 6 - O - methylerythromycin A