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.~~=†%@¶##          a drug ring might exist         ##¶@%†=~~.
...~~††@¶#           inside most drugs or           #¶@††~~...
....~=%@@¶              at least a few              ¶@@%=~....
....~===%@                                          @%===~....
.~~=†%@¶##          ##########                      ##¶@%†=~~.
.~~=†%@¶##         #          #                     ##¶@%†=~~.
.~~=†%@¶##        #  @@@@@@@@  #    six edges       ##¶@%†=~~.
.~~=†%@¶##       #              #   means six       ##¶@%†=~~.
.~~=†%@¶##      #  @          @  #  vertices,       ##¶@%†=~~.
.~~=†%@¶##       #  @        @  #   each holding    ##¶@%†=~~.
.~~=†%@¶##        #  @      @  #    a carbon        ##¶@%†=~~.
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....~~~†%¶    edged one as well   #    @  #         ¶%†~~~....
......~=%@    but they are more    ## @ ##          @%=~......
.....~~†%@    powerful if stuck      ###            @%†~~.....
.~~~~=†%@#    together                              #@%†=~~~~.
.~~=†%@¶¶#               and a nitrogen is added    #¶¶@%†=~~.
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.~~=†%@¶##   #            @ #        #  it looks    ##¶@%†=~~.
.~~=†%@¶##   #            @ #      @  # like a      ##¶@%†=~~.
.~~=====†@   #            @ #     @  #  mandelbrot  @†=====~~.
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....~==%¶¶ not always. people have  learned  how to ¶¶%==~....
.~~=†%@@¶#               make them...               #¶@@%†=~~.
.~~=†%@### like  a  hack  for  the  nervous  system ###@%†=~~.
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