. . . "Suitable pharmaceutically acceptable salts of the object compounds (I) are conventional non-toxic salts and may include an inorganic salt, for example, a metal salt such as an alkali metal salt (e.g., sodium salt, potassium salt, etc.) and an alkaline earth metal salt (e.g., calcium salt, magnesium salt, etc.), and an ammonium salt etc.; an organic salt, for example, an organic amine salt (e.g., t" . . .