摘要 |
Provided herein are compounds of the formula (I): wherein R<SUP>1</SUP>-R<SUP>8 </SUP>are as described herein, R<SUP>4 </SUP>being phthalazinyl, pyrazinyl, pyridazinyl, or quinoxalinyl. Such compounds are particularly useful in the treatment of a disorder which is created by or is dependent upon decreased availability of serotonin, norepinephrine, or dopamine.
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