3-Ethyl hexane
Notice the two carbon chain that stems from the third carbon atom in the hexane structure.
Source
Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:
"Original%20figure%20by%20Mark%20Hockenberry.%20Licensed%20CC%20BY-SA%204.0."
Mark%20Hockenberry
CC BY-SA 3.0.