The present invention relates to a compound of the formula ÄIÜ : <；CHEM>； wherein G<；1>； is an alkyl which,may be substituted by a halogen atom or an alkoxy, or a group of the formula: <；CHEM>； wherein ring B is benzene ring which may be substituted, etc., Q<；1>； and Q<；2>； may be the same or different, and each is hydrogen atom, a halogen atom or an alkyl, n is 0, 1, 2, 3 or 4, R<；1>； is hydrogen atom, an alkyl which may be substituted, a cycloalkyl which may be substituted, a phenyl which may be substituted, etc., Z<；1>；, Z<；2>；, Z<；3>； and Z<；4>； may be the same or different, and each is CH or N, provided that 3 or more of Z<；1>；, Z<；2>；, Z<；3>； and Z<；4>； should not be N at the same time, G<；2>； is hydrogen atom, -NR<；3>；R<；4>；, -OR<；5>；, etc., where R<；3>； to R<；8>； each is independently hydrogen atom, an alkyl which may be substituted, an alkenyl, an alkynyl, etc., or a pharmaceutically acceptable salt thereof.
