10765
To this study on estriol glucuronidation we have added experiments with 13 - epiestradiol , a synthetic estradiol in which the spatial arrangement of the methyl on C18 and the hydroxyl on C17 is significantly different than in other estrogens .
 Chemical: estriol; Chemical: 13 - epiestradiol; Chemical: estradiol; Chemical: methyl; Chemical: hydroxyl; Chemical: estrogens
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: estriol; Chemical: 13 - epiestradiol; Chemical: estradiol; Chemical: methyl; Chemical: hydroxyl; Chemical: estrogens