$coord
.00000000000000 .00000000000000 -1.00494155217173 n
1.85766051386774 .00000000000000 .50247077608587 o
-1.85766051386774 .00000000000000 .50247077608587 o
$intdef
# definitions of internal coordinates
1 k 1.0000000000000 stre 2 1 val= 2.39232
2 d 1.0000000000000 stre 3 1 val= 2.39232
3 k 1.0000000000000 bend 2 3 1 val= 101.88429
$end