Find a return in a text Filed

I'm trying to filter out out possible information.

This is how information was entered into one text field.

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Company name

Address

City StateZip

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That is in all one field with returns after Company Name and Address.  State and Zip are right next to each other.

I need to separate into 5 different fields.

Looking for ideas how this can be done.

I have been using Left,Right and Mid for other information.

But I'm not sure how to look for "returns" especially when there are 2.

Thanks for reading..