2-(4-bromo-2,3,6,7-tetrahydrofuro[2,3-f][1]benzoxol-8-yl)ethanamine 2-(4-bromo-2,3,6,7-tetrahydrofuro[2,3-f]benzofuran-8-yl)ethanamine 2-(4-bromo-2,3,6,7-tetrahydrofuro[2,3-f]benzofuran-8-yl)ethylamine