Offset curve inCplane in grasshopper

Im trying to offset a curve in grasshopper the same way rhino does it.
In rhino -> “offset” inCplane:yes (top)
Then in grasshopper I tried different planes in “offset curve” but I don’t get the correct resulted.

In the file I have done the offset in Rhino but I can’t match it with grasshopper.
offset.3dm (22.9 KB)