A compound represented by the general formula, or a salt thereof, has exceptional CXCL10 inhibitory activity and is useful as a treatment agent for the prevention and/or treatment, etc., of diseases involving overproduction of CXCL10. In the formula: R1 is a C1-6 alkyl group, etc.; R2 is a hydrogen atom, etc.; R3 is a halogen atom, etc.; Z1, Z2, and Z3 are CH, etc.; X1 is CONH, etc.; ring A is a phenyl group, etc.; R4 is a halogen atom, etc.; and m is an integer of 0-5.