$coc 7 0 0 1C1 CT 1 0 1 1 0.000000 2H11 H1 0 0 1 1 0.150000 3H12 H1 0 0 1 1 0.150000 4O OS 0 0 1 1 -0.600000 5C2 CT 2 0 1 1 0.000000 6H21 H1 0 0 1 1 0.150000 7H22 H1 0 0 1 1 0.150000 1 4 5 2 1 3 6 5 7