18
linker opt geo
  C        -4.7658205191       -0.4985809095        0.1242989125
  C        -4.9948679027        0.8747334170        0.0897353819
  C        -3.9540644428        1.8064881353       -0.0356623714
  C        -2.6568359785        1.2791473989       -0.1265542230
  C        -2.4278290307       -0.0942259100       -0.0923315649
  C        -3.4685557941       -1.0259245443        0.0344953289
  C        -4.1817201013        3.2902809372       -0.0731279446
  C        -3.2407931829       -2.5096114726        0.0757911496
  H        -3.2319199169        3.8291467275       -0.1744560710
  H        -4.8321837547        3.5712926202       -0.9141499005
  H        -4.6821275107        3.6381475926        0.8420956667
  H        -5.6086903640       -1.1814727669        0.2234492365
  H        -1.8139151464        1.9619546813       -0.2258919382
  H        -2.5913729135       -2.7879934253        0.9183880332
  H        -4.1906233929       -3.0483480090        0.1776433111
  H        -2.7389593705       -2.8601473535       -0.8376770866
 Br        -6.8112342301        1.4828211448        0.2201521741
 Br        -0.6118315667       -0.7025308803       -0.2256545209

