What is the version of the following sentence with correct punctuation?

Molybdenum carbide Mo2C can occur in many crystalline forms the most common of which is aMoC and MoC It is the latter phase which is stable at low temperatures and occurs in steels MoC has a closepacked hexagonal crystal structure with the carbon atoms located in one half of the available octahedral interstices
Molybdenum carbide (Mo2C) can occur in many crystalline forms, the most common of which is a-MoC and -MoC. It is the latter phase which is stable at low temperatures and occurs in steels. -MoC has a close-packed hexagonal crystal structure with the carbon atoms located in one half of the available octahedral interstices.