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The structure of the lowest exciton state that initiates charge separation, and possible configurations of the first CT state. (A) Circles show the pigments that are coherently mixed in a lowest exciton state. The area under the circle is proportional to population of the corresponding site. (B–D) Circles show a localization of the electron and hole in the CT states (i.e., 
and 
) that can be coupled to the lowest exciton state.
