How do I identify a vCenter locator in vSphere?

When deploying an OVA/OVF file to vCenter, ovftool requires a locator.

The example locator in the user guide looks like this: vi://user:password@localhost/Datacenter

When I look at the vCenter path with vSphere, the hierarchy we have set up is:

- Location 
-- Department with Spaces 
--- security_group 

Perhaps my assumption that this hierarchy is the locator is incorrect, becausevi://user:password@localhost/Location/Department\ with\ Spaces/security_group just returnsError: Cannot parse VI locator.

Is there a way in vSphere to determine the correct locator of a vcenter for an ovftool deployment?