***,c6
memory,100,m
t=60.0
rc=1.335472  
dik=90.0

rd=3.1
rd2=rd+1.1395

geometry={angstrom;
q
C1 1 rc
C2 1 rc  2  t
C3 1 rc  3  t  2  180.0
C4 1 rc  4  t  3  180.0
C5 1 rc  5  t  4  180.0
C6 1 rc  6  t  5  180.0
C7 1 rd   2 dik 3  dik
O1 1 rd2  2 dik 3  dik
}  

basis=vdz

hf
mp2
extrapolate,basis=vtz:vqz
 
dummy,c7,o1
basis=vdz
hf
mp2
extrapolate,basis=vtz:vqz


dummy,c1,c2,c3,c4,c5,c6
basis=vdz
hf
mp2
extrapolate,basis=vtz:vqz