label: 2,2',2'',2'''-((4-((2-hydroxyethyl)amino)-8-(piperidin-1-yl)pyrimido(5,4-D)pyrimidine-2,6-diyl)dinitrilo)tetraethanol
label_lc: 2,2',2'',2'''-((4-((2-hydroxyethyl)amino)-8-(piperidin-1-yl)pyrimido(5,4-d)pyrimidine-2,6-diyl)dinitrilo)tetraethanol