[{"from": "human", "value": "Could you provide a description of this molecule? [C][N][Branch1][C][C][C][C][C][C][Branch2][Ring1][Ring1][C][=C][Branch1][Branch1][C][O][Ring1][Branch1][C][=C][Branch1][Branch1][C][=C][Ring1][Branch2][C][#N][C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][F]"}, {"from": "gpt", "value": "The molecule is a bicyclic phthalene derivative and selective serotonin reuptake inhibitor (SSRI), with antidepressant and anxiolytic activities. Citalopram selectively inhibits the neuronal reuptake of the neurotransmitter serotonin (5-HT) in presynaptic cells in the central nervous system, thereby increasing levels of 5-HT within the synaptic cleft and enhancing the actions of serotonin on its receptors. Increased serotonergic neurotransmission results in antidepressive and anxiolytic effects."}]