unable to find elements in web scraping

Question

I can't find the a classname selenium in visual studio

could you please help me I need to scrape a page, but I can't find a class name, to continue with my project, I have tried several combinations without success

link page https://www.cuitonline.com/search.php?q=20062900890

I can enter from the main page, and obtain the desired result, but I need to enter the link of that result, it is the name that appears that is dynamic, but the class is always the same, I have placed a time dilator, but that dom se generate, but still not find the element

the visual studio me the following always says OpenQA.Selenium.NoSuchElementException: 'Unable to locate element: // div [@ class =' denomination ']'

even now that I have used Xpath.

This is the error message:

OpenQA.Selenium.NoSuchElementException: 'Unable to locate element: //div[@class ='denominacion']'

in visual studio
string cuit = "20062900890";
IWebDriver driver = new FirefoxDriver();
driver.Navigate().GoToUrl("https://www.cuitonline.com/");
var inputSearch = driver.FindElement(By.Name("q"));
inputSearch.SendKeys(cuit);
inputSearch.Submit();

        driver.Manage().Timeouts().PageLoad = TimeSpan.FromSeconds(10);  
        var nombreencontradoAhacerClick = driver.FindElement(By.XPath("//div[@class='denominacion']"));  
        var link = nombreencontradoAhacerClick.FindElement (By.XPath("./a"));  
        driver.Navigate().GoToUrl(link.GetAttribute("href"));  

i want to find the first and unique item of search, This item, in turn, has a link in itself, I want to capture it and enter it. and capture your item details