1-Piperazineacetamide, N-(3,4-dihydro-4-oxo-3-quinazolinylmethyl)-4-methyl-, tetrahydrochloride 70395-13-0 N-(3,4-Dihydro-4-oxo-3-quinazolinylmethyl)-4-methyl-1-piperazineacetamide tetrahydrochloride