It's less active then DMT. I lately extracted something that must have been DMT N-oxide. It was from (apparantly too old) mimosa, was yellow and sticky and far less active then DMT.
I also have experienced that (genuine) ayahuasca with psychotria viridis instead of mimosa, has a somewhat different effect then mimosa-ayahuasca. On the take-of and during the landing i had the full visual effects of DMT, but not the full psychedelic effects yet. It was as if i was almost completely sober and normal, but just had these DMT visuals with closed and open eyes. The full DMT effects just kicked-in later and finished earlyer than these visual effects. So i posted somewhere here that i believed there was maybe bufotenin present in chacruna, based on 69ron's vivid descriptions of the stuff. But he responded that what i'd experienced was probably DMT N-oxide. So if you have leaves that contain many DMT N-oxide and little DMT, then you will probably have a very visual experience and little other effects.