7620
Tsitsikammamines are marine alkaloids whose structure is based on the pyrroloiminoquinone scaffold .
 Tsitsikammamines, pyrroloiminoquinone
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 Tsitsikammamines, pyrroloiminoquinone