definiens: means ( ±)- FTC, with the chemical name ( ±)-ß-2’,3’-dideoxy-5 - fluoro-3’-t hiacytosine . In the event that Bukwang determines t o exercise such right of first refusal it shall so no tify [COMPANY] ( ) and [COMPANY] s hall, within five ( 5 ) days of its receipt of the Bukwang Notice, notify each third party with rights to Racivir of Bukwang ’s election to exercise its right of first refusal her eunder, and [COMPANY] shall notify Bukwang within five ( 5 ) days of a third party ’s timely exercise or failure to ti mely exercise its right of first refusal such that Bukwang may exercise its right without giving effect to an addi tional opportunity of such third party to exercise its right of first refusal . If a third party has not exercised its rig ht of first refusal, the parties shall negotiate in good faith for a period of ninety ( 90 ) days a separate agreement for the license rights contemplated by this Section 2 . 6 . If the parties are unable to reach agreement during such t ime period, [COMPANY] shall have no further obliga tion to Bukwang under this Section 2.6