SMILES: CCCCC/C=C\\CCC(=O)[O-]
Description: The molecule is a medium-chain fatty acid anion and the conjugate base of obtusilic acid, arising from deprotonation of the carboxylic acid group. It is a straight-chain fatty acid anion and a medium-chain fatty acid anion. It is a conjugate base of a cis-4-decenoic acid.