Novel salt and related crystalline forms of Compound A:wherein the salt is the hydrogen sulfate salt,characterised by its X-ray powder diffraction diagram,method for preparing the same and pharmaceutical compositions containing it.本發明係關於化合物A之新穎鹽及相關的結晶形式:其中該鹽為硫酸氫鹽,其特徵在於其X射線粉末繞射圖,其製備方法,及包含其之醫藥組合物。