2 1 0 0000 0 0 0 0 0999 V2000 2.0000 0.0000 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 3.0000 0.0000 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 1 2 2 0 M END > InChI=1S/C2H2/c1-2/h1H2 > SNVLJLYUUXKWOJ-UHFFFAOYSA-N > 1/0/N:1,2/CRV:2.2/rA:4nCC2HH/rB:d1;s1;s1;/rC:2,0,0;3,0,0;1.69,.5369,0;1.69,-.5369,0; > C2 H2 > 26.03728 > C([H])([H])=[C] > 4937495 $$$$