using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
class Solution {

    static void Main(String[] args) {
        ulong n = Convert.ToUInt64(Console.ReadLine());
        //string[] m_temp = Console.ReadLine().Split(' ');
        //int[] m = Array.ConvertAll(m_temp,Int32.Parse);
        ulong s = 1;
        if(n > 2)
             s = F(n) / F(n - 2) / F(2) + 1;
        Console.WriteLine(s % (Math.Pow(10, 9) + 7));
    }
    static ulong F(ulong num)
    {
        ulong b = 1;
        for(ulong i = 2; i < num + 1; i++)
            b*=i;
        return b;
    }
}