"Sterculia" Natural Recordings by Native Speakers
Sterculia is a genus of tropical and subtropical trees and shrubs in the family Malvaceae. They are native to Africa, Asia, and Australia, and are commonly known as the chocolate tree, because the seeds of Sterculia urens are used to produce a chocolate-like substance.
I couldn't find any word "stercorate" in the dictionary. It's possible that it's a made-up or non-existent word.
I couldn't find any information on the word "stercorin". It's possible that it's a misspelling, a word from a specific dialect or a made-up term.