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![Yun Woong-sup, right, CEO of Ildong Pharmaceutical, and Isao Teshirogi, CEO of Shionogi, pose for a photo after signing an agreement online to codevelop an oral Covid-19 treatment. [ILDONG PHARMACEUTICAL]](https://image.koreajoongangdaily.com/11662792.jpg?imageId=11662792&width=240&height=184&format=webp&format=jpg)