SR-17018 was formulated as being a G-protein-biased MOP agonist, but displays a variety of pharmacological results which cannot be explained via the biased signaling speculation.知乎，让每一次点击都充满意义 —— 欢迎来到知乎，发现问题背后的世界。知乎，让每一次点击都充满意义 —— 欢迎来到知乎，