15218
3 ' - R / S - Hydroxyvoacamine , a potent acetylcholinesterase inhibitor from Tabernaemontana divaricata .
 Chemical: 3 ' - R / S - Hydroxyvoacamine
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: 3 ' - R / S - Hydroxyvoacamine 
Answer:
 Chemical: 3 ' - R / S - Hydroxyvoacamine