A compound represented by the following formula (1): ** Formula ** wherein R 1 is a hydrogen atom, a halogen atom, an alkyl group having 1 to 6 carbon atoms, a haloalkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms or a haloalkoxy group having 1 to 6 carbon atoms (R1 can occupy any substitutable position of the benzene ring or pyridine ring), L is a single bond , -O- or -CH2O- (L may occupy any substitutable position of the benzene ring or the pyridine ring), R2 is a substituted or unsubstituted 6 to 10-membered aryl group, or a 5 to 10 aromatic heterocyclic group substituted or unsubstituted members, X is a carbon atom or a nitrogen atom, R3 is an alkyl group having 1 to 6 substituted or unsubstituted carbon atoms, an alkenyl group having 2 to 6 substituted or non-substituted carbon atoms substituted, an alkynyl group having 2 to 6 d atoms e substituted or unsubstituted carbon, a substituted or unsubstituted 3 to 8-membered monocyclic or bicyclic cycloalkyl group, a substituted or unsubstituted 4 to 8 membered monocyclic or bicyclic cycloalkenyl group, a substituted 4 to 8 membered substituted aliphatic heterocyclic group or unsubstituted, or a substituted or unsubstituted 5 to 10 unsaturated aliphatic heterocyclic group, R4 is a hydrogen atom, an alkyl group having 1 to 6 substituted or unsubstituted carbon atoms, or a monocyclic or bicyclic cycloalkyl group 3 to 8 substituted or unsubstituted members, R5a and R5b are each independently a hydrogen atom, or an alkyl group having 1 to 6 substituted or unsubstituted carbon atoms, or R4 and R5a are optionally linked together to form, together with the nitrogen atom to which R4 is attached, an aliphatic heterocycle containing saturated nitrogen of 4 to 8 members (in this case, R5b is a hydrogen atom ), R6 and R7 are each independently a hydrogen atom, an alkyl group having 1 to 6 substituted or unsubstituted carbon atoms, a haloalkyl group having 1 to 6 carbon atoms, an alkenyl group hav
