(9S),10-epoxy-(10,12Z)-octadecadienoate
(9s),10-epoxy-(10,12z)-octadecadienoate
A long-chain unsaturated fatty acid anion that is the conjugate base of (9<i>S</i>),10-epoxy-(10,12<i>Z</i>)-octadecadienoic acid, arising from deprotonation of the carboxylic acid group.