    New chain ID            Original chain ID

7oht-pdb-bundle1.pdb:
           1                         1
           2                         2
           3                         3
           B                         B
           C                         C
           D                         D
           E                         E
           F                         F
           H                         H
           J                         J
           M                         M
           O                         O
           Q                         Q
           S                         S
           T                         T
           V                         V
           W                         W

7oht-pdb-bundle2.pdb:
           b                         b
           e                         e
           f                         f
           m                         m
           r                         r
           u                         u
           v                         v
           w                         w
           x                         x
           y                         y
