To provide a liquid crystal compound satisfying at least one of physical properties such as high stability to light, a high clearing point, a low minimum temperature of a liquid crystal phase, small viscosity, suitable optical anisotropy, large dielectric anisotropy, a large dielectric constant in a minor axis direction, a suitable elastic constant and excellent compatibility; a liquid crystal composition containing the compound; and a liquid crystal display device including the composition.The compound is represented by formula (1). For example, R1 is alkyl having 1 to 15 carbons, ring A1 to ring A4 are 1,4-cyclohexylene or 1,4-phenylene, Z1 to Z4 are a single bond, —(CH2)2—, —COO— or —CH2O—, X1 is halogen, —C≡N, —CF3 or —OCF3, L1 and L2 are hydrogen or fluorine, Y1 and Y2 are fluorine; a, b, c and d each are 0 or 1, and a sum thereof is 1 or 2.