A compound of the formula (I):
wherein X, Y, Z and R are as defined above,
salt thereof, or hydrate thereof which effectively be absorbed from the lymph vessel in the intestinal tract and transferred to the lymph node in a high concentration is provided.
式 (I) 的化合物:
其中 X、Y、Z 和 R 如上定义、
其盐或水合物,能有效地被肠道淋巴管吸收并高浓度地转移到淋巴结。