up which may be substituted with (R.sup.16).sub.q or 2-pyridyl group which may be substituted with (R.sup.16).sub.q, Z is an oxygen atom, R.sup.5, R.sup.6 and R.sup.7 respectivelyrepresent a hydrogen atom, i is an integer of 0 to 3, r is 0, X is a chlorine atom or a bromine atom, and R.sup.2 and R.sup.3 do not simultaneously represent a hydrogen atom; anda compound wherein R.sup.1 is Q.sub.3, in w