(125I) N-(n-butyl-4-(4'-azido-3'-iodophenylethyl-ester))-4',4''-difluoro-3alpha-(diphenylmethoxy)tropane
(125i) n-(n-butyl-4-(4'-azido-3'-iodophenylethyl-ester))-4',4''-difluoro-3alpha-(diphenylmethoxy)tropane