Вот эти "убил", реагентамиhttps://www.google.com/search?q=martens+%D0%B1%D0%BE%D1%82%D0%B8%D0%BD%D0%BA%D0%B8+%D0%BC%D1%83%D0%B6%D1%81%D0%BA%D0%B8%D0%B5&prmd=isnxv&sxsrf=AOaemvK4E8OrWm7tf-P53GGG00KKKaNAew:1639848999419&source=lnms&tbm=isch&sa=X&ved=2ahUKEwjQtuHI8e30AhWClYsKHYgECN0Q_AUoAXoECAMQAQ&biw=1280&bih=800&dpr=1.5#imgrc=i0RpWjNo0RoBbM