2-Butenal, ID: C4170303 NIST 24032906302D 1 1.00000 0.00000 Copyright by the U.S. Sec. Commerce on behalf of U.S.A. All rights reserved. 5 4 0 0 0 1 V2000 0.0000 0.0000 0.0000 C 0 0 0 0 0 0 0 0 0 0.8737 0.4625 0.0000 C 0 0 0 0 0 0 0 0 0 1.7474 0.0000 0.0000 C 0 0 0 0 0 0 0 0 0 2.6725 0.4625 0.0000 C 0 0 0 0 0 0 0 0 0 3.5462 0.0000 0.0000 O 0 0 0 0 0 0 0 0 0 1 2 1 0 0 0 2 3 2 3 0 0 3 4 1 0 0 0 4 5 2 0 0 0 M END