15218
3 ' - R / S - Hydroxyvoacamine , a potent acetylcholinesterase inhibitor from Tabernaemontana divaricata .
 Chemical: 3 ' - R / S - Hydroxyvoacamine
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: 3 ' - R / S - Hydroxyvoacamine