You will be shown an abstract from a biomedical research paper. Given this abstract, your task is to extract all unique entities of the following types: ["Chemical"].

Please return the output as a JSON object of the format: {"Chemical": ["Arsenic", ...]}. The keys should be entity types and values should be lists of extracted entities belonging to the corresponding type. If you cannot find entities belonging to a specific type, the value should be [].

Only output the JSON object and do not include any additional text.

Abstract:

The oestrogenic and anti-platelet activities of dihydrobenzofuroisocoumarins and homoisoflavonoids from Liriope platyphylla roots. The ethanolic extract of Liriope platyphylla (Liliaceae) roots showed potential oestrogenic and anti-platelet activities. Twenty-six compounds were isolated and classified as 10 skeletons, including two unusual new dihydrobenzofuroisocoumarins, (+)-platyphyllarin A (1) and B (2), one new butanoate, ethyltributanoate (3), and two new homoisoflavanones, (-)-liriopein A (4) and B (5), along with 21 known compounds, including six homoisoflavonoids, one chalcone, six amides, one lignan, one fatty acid derivative, one alkaloid, three benzenoids, and two steroids. The biosynthetic pathway of compounds 1 and 2 was proposed in the current investigation. The oestrogenic activity of the isolates was evaluated utilising the pER8:GUS reporter assay system in transgenic Arabidopsis plant as well as the SEAP reporter assay system in MCF-7 breast cancer cell-line; the anti-platelet activity was evaluated using the anti-platelet aggregation assay. Several components exhibited significant oestrogenic and anti-platelet activities; demonstrating for the first time the potential use of L. platyphylla as a nutritional supplement for cardiovascular and endocrine diseases.
{"Chemical": ["homoisoflavonoids", "chalcone", "(+)-platyphyllarin A (1) and B", "butanoate", "(-)-liriopein A (4) and B", "steroids", "amides", "benzenoids", "lignan", "ethyltributanoate", "homoisoflavanones", "dihydrobenzofuroisocoumarins", "fatty acid"]}