The present invention provides a compound having the structure of Formula (I) or a pharmaceutical 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)结构的化合物或其药物可接受盐、
水合物、溶质或异构体,用于控制制剂的给药和释放。