Tetracarbon, ID: C12184804 NIST 24031907012D 1 1.00000 0.00000 Copyright by the U.S. Sec. Commerce on behalf of U.S.A. All rights reserved. 4 5 0 0 0 3 V2000 1.5000 0.8660 0.0000 C 0 0 0 0 0 0 0 0 0 0.5001 0.8660 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 1.0000 0.0000 0.0000 C 0 0 0 0 0 0 0 0 0 2 1 1 0 0 0 3 2 2 0 0 0 1 4 2 0 0 0 4 3 1 0 0 0 2 4 1 0 0 0 M RAD 1 1 2 M RAD 1 3 2 M END