Get access to inner object to check if they are the same

I am working on a unit test where I want to assert that the object coming back is the same as the model.

        var actual = scope.InstanceUnderTest.GetContent(expectedId);
        var newFileStreamer = new FileStreamer(scope.TestDocument.Data, "application/octet-stream");
        Assert.IsTrue(actual.Result.Equals(newFileStreamer));

actual.Result appears to be one level away from the object that is the same as newFileStreamer:

How do I get access to the inner filestream object to check if they are the same?