PROBLEM TO BE SOLVED: To provide: a new compound selective to mastocarcinoma-resistive protein (BCRP) a process for producing the same and a nulear medicinal diagnostic regeant containing the same.SOLUTION: A PET drug [F] FUN-4 is developed in which a compound FUN-4 represented by formula is labeled withF. The compound FUN-4 is a substrate compound selective to BCRP.