Wiktionary
dicoronylene
n. (context organic compound English) A polycyclic aromatic hydrocarbon, consisting of two molecules of coronene fused together, that is a byproduct of the hydrocracking of petroleum
Wikipedia
Dicoronylene
Dicoronylene is the trivial name for a very large polycyclic aromatic hydrocarbon. Its formal name is benzo[10,11]phenanthro[2',3',4',5',6':4,5,6,7]chryseno[1,2,3-bc]coronene ( IUPAC name) or benzo[1,2,3-bc:4,5,6-b'c']dicoronene (name sometimes used in Chemical Abstracts). It has 15 rings and is a brick-red solid. Its formula is . Dicoronylene sublimes under high vacuum, 0.001 torr, between 250 °C and 300 °C.