The present invention relates to compounds of formula (I):Wherein A1, A2, A3, A4, G1, L, Y1, Y2, Y3, Y4, R1, R2, R3and R4are as defined in claim 1; or a salt orN-oxide thereof.Furthermore, the present invention relates to intermediates for preparing compounds of formula (I), to compositions comprising them and to methods of using them to combat and control insect, acarine, nematode and mollusc pests.本發明係關於式(I)化合物:其中A1、A2、A3、A4、G1、L、Y1、Y2、Y3、Y4、R1、R2、R3及R4係如申請專利範圍第1項所定義;或其鹽或N-氧化物。此外,本發明係關於用於製備式(I)化合物的中間產物,包含彼等的組成物以及使用彼等用於對抗及控制蟲、蟎類,線蟲類及軟體動物有害生物的方法。