definiens: means ( i ) if Licensor does not conduct any Ex - PRC Phase I Expansion Cohort Clinical Trial, sixty(60 ) days after Licensor delivers to Company the last of the final reports of the results of ( a ) PRC Phase IExpansion Cohort Clinical Trial, ( b ) the PRC Phase I Dose Escalation Clinical Trial, and ( c ) the Ex - PRC Phase IDose Escalation Clinical Trial, or ( ii ) if Licensor conducts any Ex - PRC Phase I Expansion Cohort Clinical Trial, sixty ( 60 ) days after Licensor delivers to Company the last of the final reports of the results of ( a ) any Ex - PRCPhase I Expansion Cohort Clinical Trial conducted by Licensor, ( b ) the PRC Phase I Expansion Cohort ClinicalTrial, ( c ) the PRC Phase I Dose Escalation Clinical Trial, and ( d ) the Ex - PRC Phase I Dose Escalation ClinicalTrial