using System;

using System.Xml;

using HtmlAgilityPack;

​

public class Program

{

    public static void Main()

    {

        var url = @"https://www.eapteka.ru/search/?q=аспирин&PAGEN_238=1";

        HtmlWeb web = new HtmlWeb();

        web.UseCookies = true;

        var htmlDoc = web.LoadFromWebAsync(url).Result;

        var node = htmlDoc.DocumentNode.SelectSingleNode("//head/title");

        Console.WriteLine("Node Name: " + node.Name + "\n" + node.OuterHtml);

    }

}