notepad++ – Regex Parsing: Copy the content of one html tag to another html tag

I have this 2 html meta tags:

<meta name="description" content="Example"/>

<meta property="og:description" content="I love my car mostly."/>

I need to copy the content of the first meta tag to the second meta tag, as to become:

<meta name="description" content="Example"/>

<meta property="og:description" content="Example"/>