[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C][C@@H1][C@@H1][C@@H1][Branch1][=Branch2][C@H1][Branch1][Branch1][C][Ring1][Branch1][=O][C][C][=Branch2][Ring1][#C][=C][C@@][Branch1][=N][C@@][Ring1][#Branch2][Branch1][Ring1][C][C][C][=Branch1][C][=O][O][Branch1][Ring1][C][C][/C][=C][/C][=C][C][=C][C][=C][Ring1][=Branch1][C][C]"}, {"from": "gpt", "value": "The molecule is a carbobicyclic compound that is 2,3,3a,4,5,7a-hexahydro-1H-indene substituted by ethyl groups at positions 3, 4, 5 and 7, a methyl group at position 1, an oxo group at position 2, a 2-phenylethenyl group at position 5 and a carboxy group at position 4 (the 1R,3R,3aS,4S,5R,7aS stereoisomer). Isolated from Plakortis angulospiculatus, it exhibits cytotoxicity against human breast cancer MCF-7 cells. It has a role as a metabolite and an antineoplastic agent. It is a carbobicyclic compound, a cyclic ketone, an oxo monocarboxylic acid and a member of styrenes."}]