1,2-Ethanediamine, N'-(3,4-dihydro-2H-1-benzopyran-3-yl)methyl-N,N-diethyl- 83823-45-4 BRN 4469759 N'-(3,4-Dihydro-2H-1-benzopyran-3-yl)methyl-N,N-diethyl-1,2-ethanediamine