A liquid crystal compound having high stability to heat and light, etc., a high clearing point, a low minimum temperature of liquid crystal phase, a low viscosity, a suitable optical anisotropy, a large dielectric anisotropy, a suitable elastic constant, and good compatibility with other liquid crystal compounds, a liquid crystal composition containing the compound, and a LCD element using the composition are described. The compound is represented by formula (1): wherein, for example, R1 is C1-10 alkyl, ring A1, ring A2, ring A3, ring A4 and ring B1 are independently 1,4-cyclohexylene, 1,4-phenylene, 1,4-phenylene in which at least one hydrogen is substituted with halogen, 1,3-dioxane-2,5-diyl, or tetrahydropyran-2,5-diyl, Z1, Z2, Z3 and Z4 are single bonds, l, m, n and o are independently 0 or 1, and l+m+n+o≧1.