How to set redirect URL for OpenID Connect middleware in MVC application

Startup.Auth.cs

        public void ConfigureAuth(IAppBuilder app)
        {
            app.SetDefaultSignInAsAuthenticationType(CookieAuthenticationDefaults.AuthenticationType);
            app.UseCookieAuthentication(new CookieAuthenticationOptions());
            app.UseOpenIdConnectAuthentication(
                new OpenIdConnectAuthenticationOptions
                {
                    ClientId = clientId,
                    Authority = authority,
                    PostLogoutRedirectUri = postLogoutRedirectUri,
                    RedirectUri = "https://www.contonso.com"
                });

            Microsoft.IdentityModel.Logging.IdentityModelEventSource.ShowPII = true;
        }