The substituent on the C1-3 alkyl group represented by each of X1 and X2 is a halogen atom, a C1-2 alkoxy group, a C1-2 alkylthio group, or the like; the substituent on the C1-2 alkylcarbonyl-C1-2 alkyl group represented by X2 is a halogen atom, or the like; the substituent on the phenyl group, the phenyl-C1-2 alkyl group, the furyl group or the thienyl group represented by X2 is a halogen atom, a