well, that's all I can tell ya.
in winter the very leggy thin branches look like fuzzy deer antlers
and in fall the color of the leaves is unbelievable (red-orange)
tall plant, maybe 15'
don't remember what shaped leaves it had
Agree with nifty - staghorn sumac is a colonizing species which will have leggy stems with most/all branches near the tops, very fuzzy especially on the youngest stems, and brilliant red/orange compound foliage in fall.
If a female plant, there will be the reddish plumes of fruiting structures when the seed matures. Past prime, these structures often remain on the plant a darker color (even brownish to black) through the winter.