1582
We further investigated the mechanisms by which the amine heptylamine , classified as a R34 corrosive compound , increases intracellular Ca ( 2 + ) .
 amine, heptylamine, Ca ( 2 + )
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 amine, heptylamine, Ca ( 2 + )