Export your tag and be sure to choose DFP from the Adserver dropdown.
Add a new creative to your Order in DFP, by selecting "Custom". Paste the Adventive tag into the Standard HTML code block. Select "Out-of-Page" from the Targeted Ad Size dropdown. This will activate additional macro options. Place your cursor directly after the "oop=" parameter in the Adventive Tag.
Click "INSERT ESCAPED VIEW URL MACRO" This will result in the OOP macro being inserted (%%VIEW_URL_ESC%%). 
Proceed with configuring the remaining creative options according to your site requirements.