Can Microsoft Office 365 Activation Key Be Used for SystemCare Ultimate?

I’m looking for a way to activate Advanced SystemCare Ultimate 16 Pro without paying, and I found a Microsoft Office 365 activation key. I’m wondering if anyone has used an Office key to activate SystemCare or if it’s strictly for Office software.

Here’s the link to the key: Microsoft Office 365 Activation Key. Has anyone used this key to activate SystemCare, or should I be cautious about using it for other software?