[{"from": "human", "value": "Could you provide a description of this molecule? [C][C][=C][Branch1][Branch2][C][=C][C][=C][Ring1][=Branch1][O][C][=Branch1][C][=O][N][C@@H1][Branch1][O][C][S][C][=C][C][=C][C][=C][Ring1][=Branch1][C@@H1][Branch2][Ring1][=N][C][N][C][C@H1][C][C][C][C][C@H1][Ring1][=Branch1][C][C@H1][Ring1][#Branch2][C][=Branch1][C][=O][N][C][Branch1][C][C][Branch1][C][C][C][O]"}, {"from": "gpt", "value": "The molecule is a potent HIV-1 protease inhibitor. It is used in combination with other antiviral drugs in the treatment of HIV in both adults and children. Nelfinavir inhibits the HIV viral proteinase enzyme which prevents cleavage of the gag-pol polyprotein, resulting in noninfectious, immature viral particles."}]