2-diethanolamino-4,8-diheptamethyleneimino-6-((N-6-(fluorescein-6-carboxamido)hexanoylaminoethyl)ethanolamino)pyrimido(5,4-d)pyrimidine
2-diethanolamino-4,8-diheptamethyleneimino-6-((n-6-(fluorescein-6-carboxamido)hexanoylaminoethyl)ethanolamino)pyrimido(5,4-d)pyrimidine