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(A) Interactions of aprepitant’s triazolinone ring with W184, E193, and H197 side-chains. (B) positioning of the triazolinone ring of the conjugates in the same projection as in (A). (C–E) Relative position of the DOTA moiety in conjugates 5A (C), 5B–D (D), and 5E (E). The receptor helices are shown as yellow cylinders.
