Your data looks to be predictably separated by commas. The easiest solution is going to be using the "Text to Columns" tool (in the light green "Parse" tab of tools).
You can tell the tool which field to split and what character/symbol to use to separate the columns. If you know how many columns, just enter the correct number to split. Otherwise, may be a little trial and error to find the right number, but that should get you going.
From there you can rename them in the "Select" tool - or get a little more fancy using "Dynamic Rename" or some other tool depending on how much you want to manually type.
