(6S, 9S) -1- (benzylcarbamoyl) -2, 9-dimethyl-4 (9S) -1- Yl) methyl) phenyl dihydrochloride The title compound was prepared according to the procedure described in Example 1, step (b) Crystals of the hydrate of the genphosphate are provided.분말 X선 회절에 있어 회절 각도 (2θ±0.2°) 15.9°에 회절 피크를 나타내는, 4-(((6 S, 9 S)-1-(벤질카르바모일)-2, 9-디메틸-4, 7-디옥소-8-(퀴놀린-8-일메틸)옥타하이드로-1 H-피라지노[2, 1-c][1, 2, 4]트리아진-6-일)메틸)페닐디하이드로겐 포스페이트의 수화물의 결정이 제공된다.