A compound represented by the formula (Ib) or a respective agriculturally and horticulturally acceptable salt: wherein Het1 represents 3-pyridyl, R1 represents hydroxyl, R2 and R3 represents cyclopropylcarbonyloxy, and R4 represents hydroxyl, cyclopropylcarbonyloxy or 2-cyanobenzoyloxy.Un compuesto representado por la fórmula (Ib) o una sal respectiva agrícolamente y hortícolamente aceptable: en donde Het1 representa 3-piridilo, R1 representa hidroxilo, R2 y R3 representan ciclopropilcarboniloxilo, y R4 representa hidroxilo, ciclopropilcarboniloxilo o 2-cianobenzoiloxilo.