[{"from": "human", "value": "Provide a brief overview of this molecule. [C][O][C][=C][C][=Branch2][Branch1][Branch1][=C][C][=Branch1][Ring2][=C][Ring1][=Branch1][C][O][C][=C][C][=Branch2][Ring2][Branch1][=C][Branch2][Ring1][S][C][=C][Ring1][=Branch1][C][=Branch1][C][=O][C][C][C][C][C][N][Branch1][Branch1][C][C][Ring1][=Branch1][C][C][N][S][=Branch1][C][=O][=Branch1][C][=O][C][Cl][N][O][C]"}, {"from": "gpt", "value": "The molecule is an aromatic ether that is the 3,5-dimethoxybenzyl derivative of N-(2-{4-[3-(4-amino-5-chloro-2-hydroxyphenyl)-3-oxopropyl]piperidin-1-yl}ethyl)methanesulfonamide. A potent and selective 5-HT4 antagonist, with a pKi of 9.1 at 5-HT4 receptors in guinea pig striatal membranes and greater than 1000-fold selectivity over 5-HT1A, 2C, 3 and D1, D2, M1, M2, AT1, B1 and alpha1C receptors. The ketone group gives RS 39604 a relatively long half life; it is also orally active and so suitable for in vivo studies. It has a role as a serotonergic antagonist. It is a member of piperidines, an aromatic ether, a sulfonamide, an aromatic ketone and a member of monochlorobenzenes."}]