Using a keybinding as an alias

[oiiiiiiii]

Checklist

• Have you read through :h nvim-surround to see if there might be any relevant information there?

Is your feature request related to a problem? Please describe.
I want to add a new alias that is not just one character, but instead a keybinding (in my case <A-.>. I tried the following setup (lazy), but it doesn't work:

return {
    "kylechui/nvim-surround",
    version = "*", -- Use for stability; omit to use `main` branch for the latest features
    event = "VeryLazy",
    config = function()
        require("nvim-surround").setup({
            aliases = {
                ["<A-.>"] = ")"
            }
        })
    end
}

When I replace the keybinding with a single character (e.g. d), it works fine. But I would like this as a keybinding, as I mapped that to ")" everywhere else.

Describe the solution you'd like
Being able to not only map single characters for an alias, but instead keybindings (if that is possible).

Additional context
None

[oiiiiiiii]

I also tried mapping <A-.> to ) in every vim mode there is, but this doesn't work.