Lost Microsoft Office Product Key Before Validating/Installing - ANY hope?

I've lost the box to the Dell laptop I purchased, and have not yet validated Microsoft Office.  I have lost the key code to validate Microsoft Office, and the computer was purchased more than 30 days ago.

The license key for Microsoft Office has NEVER been used.  Is there any way to determine the license key other than the physical paperwork in the original box?  Does Dell have a way, or can I look it up through my system order somehow?

Can the license key be replaced?

Running out of options,

Drew