compound, prodrug, pharmaceutical agent, method for the prophylaxis or treatment of lower urinary tract diseases in a mammal, and use of the compound or a prodrug thereof
The present invention aims to provide a compound having a superior selective ± 1D adrenergic receptor antagonistic action and useful as an agent for the prophylaxis or treatment of a lower urinary tract disease and the like. The present invention provides a compound represented by the formula (I) wherein each symbol is as defined in the specification, or a salt thereof.