N-(2-(1,6,7,8-tetrahydro-2H-indeno[5,4-b]furan-8-yl)ethyl)propionamide; Propanamide, N-[2-(1,6,7,8-tetrahydro-2H-indeno[5,4-b]furan-8-yl)ethyl]; N-[2-(1,6,7,8-Tetrahydro-2H-indeno[5,4-b]furan-8-yl)ethyl]propanamide; N-[2-(2,6,7,8-tetrahydro-1H-cyclopenta[e][1]benzofuran-8-yl)ethyl]propanamide