Provided is a composite of a hydrophobic cluster compound and a β-1,3-1,6-D-glucan with its β-1,6-bonding having a degree of branching during 50% to 100% with respect to β-1,3-bonding.一種疏水性團簇化合物,與相對於β-1,3鍵結,其β-1,6鍵結之分支度為50%至100%之β-1,3-1,6-D-葡聚糖之複合體。(該代表圖無元件符號及其代表之意義)