The present invention provides a compound having the structure of Formula (I) or a pharmaceutically acceptable salt, hydrate, solvate, or isomer thereof, for the controlled delivery and release of Agent.
本发明提供了一种具有式(I)的化合物或其药用可接受的盐、
水合物、溶剂合物或异构体,用于对药物的控制释放和释放。