An indole compound having a carbamoyl group, a ureido group and a substituted oxy group having the following formula (1) or a salt thereof: In the formula (1), R1 represents a hydrogen atom, an alkyl group, a hydroxy group, or an alkoxy group; R2 represents a hydrogen atom, an alkyl group, a cycloalkyl group, an aryl group, or a heterocyclic group; R3 represents a halogen atom, an alkyl group, an alkenyl group, an alkynyl group, a cycloalkyl group, an aryl group, a heterocyclic group an alkoxy group, an alkenyloxy group, an alkynyloxy group, a cycloalkyloxy group, an aryloxy group or a heterocyclic oxy group; m represents 0, 1, 2, or 3.