Original sentence: MDMA (3,4-methylenedioxymethamphetamine), most commonly known today by the street name ecstasy,  is a synthetic entactogen of the phenethylamine family whose primary effect is to stimulate the brain to rapidly secrete large amounts of serotonin, causing a general sense of openness, empathy, energy, euphoria, and well-being
Edited sentence: MDMA (3,4-methylenedioxymethamphetamine), is a dangerous drug most commonly known today by the street name ecstasy,  is a synthetic entactogen of the phenethylamine family whose primary effect is to stimulate the brain to rapidly secrete large amounts of serotonin, causing a general sense of openness, empathy, energy, euphoria, and well-being