Problem to be solved: to provide a new compound which exhibits physiological activity such as cytotoxicity.A new compound represented by the following chemical formula (I) isolated from the Pinot collected in Sugao Bay, Kochi Prefecture.No selection【課題】細胞毒性等の生理活性を示す新規化合物を提供すること。【解決手段】高知県宿毛湾にて採取されたカイメンから単離した次の化学式(I)で表される新規化合物。【選択図】なし