Here's how to understand it:

* C represents Carbon

* H represents Hydrogen

* 4 indicates there are four carbon atoms in the molecule

* 10 indicates there are ten hydrogen atoms in the molecule

Methylpropane is an alkane, meaning it's a saturated hydrocarbon (contains only single bonds between carbon atoms). Its structure is branched, with a methyl group (CH₃) attached to the central carbon atom of a propane chain (C₃H₈).