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Neither the structural formula, nor systematic name given are correct. The acetyl group is in position 2- of the phenothiazine tricycle. The Pubchem entry is incorrect (triple-checked in Martindale, Kleemann/Engels Encyclopaedia of Pharmaceutical Substances and L.H. Frotas Antipsicóticos). I'm going to upload the correct structural formula and fix the systematic name.--Spiperon (talk) 18:51, 5 December 2008 (UTC)[reply]
In general, typical phenothiazine antipsychotics are substitued on the position 2- of the phenothiazine tricycle, or they are not substitued at all (apart from the basic C3N-chain on position 10-), like this: