Complex sentence: Imipramine has the second highest attraction for the serotonin transporter (SERT) in the tricyclic antidepressant class behind clomipramine, which provides a very strong and proportional effect on the blockade of serotonin reuptake.
Split into simpler sentences: Imipramine has the second highest attraction for the serotonin transporter (SERT) in the tricyclic antidepressant class behind clomipramine. This provides a very strong and proportional effect on the blockade of serotonin reuptake.