A compound represented by the following formula (I) or a salt thereof:
wherein R represents a hydrogen atom, a hydroxy group, or a halogen atom
Ar1 represents a bicyclic heterocyclic group represented by the following formula:
and
Ar2 represents a bicyclic heterocyclic group represented by the following formulae:
A compound represented by the following formula (I) or a salt thereof:
wherein R represents a hydrogen atom, a hydroxy group, or a halogen atom
Ar
1
represents a bicyclic heterocyclic group represented by the following formula:
and
Ar
2
represents a bicyclic heterocyclic group represented by the following formulae: