A copy or reproduction of something that has been multiplied by seven.

सात गुना प्रतिलिपि

English Usage: The artist created a septuplicate copy of his famous painting for the exhibition.

Hindi Usage: कलाकार ने प्रदर्शनी के लिए अपनी प्रसिद्ध पेंटिंग की सात गुना प्रतिलिपि बनाई।