4H-1,4-BENZOXAZIN-3-ONE, 2,3-DIHYDRO-6-CHLORO-4-(2-DIETHYLAMINOETHYL)-2-ETHYL-, 4H-1,4-Benzoxazin-3-one, 2,3-dihydro-6-chloro-4-(2-diethylaminoethyl)-2-ethyl-, hydrochloride 57462-63-2