1,2-Propadiene, ID: C463490 NIST 24032817552D 1 1.00000 0.00000 Copyright by the U.S. Sec. Commerce on behalf of U.S.A. All rights reserved. 3 2 0 0 0 1 V2000 2.0000 0.0000 0.0000 C 0 0 0 0 0 0 0 0 0 1.0000 0.0000 0.0000 C 0 0 0 0 0 0 0 0 0 0.0000 0.0000 0.0000 C 0 0 0 0 0 0 0 0 0 1 2 2 0 0 0 2 3 2 0 0 0 M END