The invention is directed to a compound of the structural formula (22)
crystal form of structural formulae (21) and its free acid, pharmaceutical compositions comprising these compounds and methods of preparing and using these compounds.
该发明涉及结构式(22)晶体形式的化合物,结构式(21)及其
游离酸,包括这些化合物的药物组合物以及制备和使用这些化合物的方法。