2H-1-Benzopyran-2-one, 7-hydroxy-6-((4-(2-hydroxyethyl)-1-piperazinyl)methyl)-4-methyl-8-(2-propenyl)-, dihydrochloride 4-Methyl-6-((4-(2-hydroxyethyl)-1-piperazinyl)methyl)-7-hydroxy-8-allylcoumarin 2HCl 96567-85-0