5-Methoxy-7, N, N-trimethyltryptamine, is a tryptamine derivative which acts as a partial agonist at the 5-HT₂ serotonin receptors, with an EC₅₀ of 63.9 nM and an efficacy of 66.2% at 5-HT2A, and weaker activity at 5-HT2B and 5-HT2C. Wikipedia