[(2R)-1-(4-bromofuro[2,3-f][1]benzoxol-8-yl)propan-2-yl]azanium chloride [(1R)-2-(4-bromofuro[2,3-f]benzofuran-8-yl)-1-methyl-ethyl]ammonium chloride [(1R)-2-(4-bromo-8-furo[2,3-f]benzofuranyl)-1-methylethyl]ammonium chloride