[{"from": "human", "value": "Describe this molecule. [C][C][Branch1][C][C][N][C][C@@H1][Branch2][Ring1][Branch1][C][O][C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][C][C][C][=Branch1][C][=O][O][C][O]"}, {"from": "gpt", "value": "The molecule is a methyl 3-{4-[2-hydroxy-3-(propan-2-ylamino)propoxy]phenyl}propanoate that has S configuration. The drug esmolol is a racemate comprising equimolar amounts of (R)- and (S)-esmolol. While the S enantiomer possesses all of the heart rate control, both the R and the S enantiomer contribute to lowering blood pressure. It is an enantiomer of a (R)-esmolol."}]