What was the group called that was formed in 1944 at the dumbarton oakes estate in Washington d c?

The group formed in 1944 at the Dumbarton Oaks estate in Washington, D.C., was known as the United Nations Conference on International Organization. This gathering brought together representatives from 39 nations to discuss and draft the foundation for what would become the United Nations. The discussions focused on issues of international cooperation, peace, and security in the aftermath of World War II.