Natsudaidain is an O-methylated flavonol, a type of chemical compound.
It can be isolated from Citrus plants[1] (Rutaceae).
The name of the molecule comes from Citrus natsudaidai (Natsumikan, lit.
"summer tangerine"), a fruit of Japan developed in 1740 with a particularly tart/sour taste.
This article about an aromatic compound is a stub.