Glyceollin III
Glyceollin III is a glyceollin, a type of pterocarpan, found in the soybean (Glycine max). It has an antiestrogenic effect. In soil, it has an antifungal activity against Aspergillus sojae. References

Antiestrogens
Pterocarpans
Heterocyclic compounds with 5 rings
Phenols