1-Butyne, ID: C107006 NIST 24032804002D 1 1.00000 0.00000 Copyright by the U.S. Sec. Commerce on behalf of U.S.A. All rights reserved. 4 3 0 0 0 1 V2000 1.5288 0.0000 0.0000 C 0 0 0 0 0 0 0 0 0 0.5096 0.0000 0.0000 C 0 0 0 0 0 0 0 0 0 2.5481 0.0000 0.0000 C 0 0 0 0 0 0 0 0 0 0.0000 0.8154 0.0000 C 0 0 0 0 0 0 0 0 0 1 2 1 0 0 0 1 3 3 0 0 0 2 4 1 0 0 0 M END