A 58-year-old Indian male with a 35 pack-year smoking history presents with progressive dysphagia, odynophagia, and stridor for 2 weeks. He has lost 4 kg in the past month. Flexible laryngoscopy shows a large, infiltrative supraglottic mass involving the aryepiglottic fold and extending into the false vocal cords. The mass is mobile and there is no vocal cord fixation. CT neck with contrast reveals the tumor is confined within the laryngeal framework with no cartilage invasion, but there is a 2 cm ipsilateral level III lymph node. Biopsy confirms squamous cell carcinoma. What is the overall TNM stage of this tumor?