ALD-52 or 1-acetyl-LSD iupac = (6aR,9R)-4-acetyl-N,N-diethyl-7-methyl-4,6,6a,7,8,9-hexahydroindolo[4,3-fg]quinoline-9-carboxamide - David Nichols supposedly said that 1-substituted LSD analogues like these have no activity at 5-HT2A themselves - But, it does get broken down to LSD in the...