(2E,6E)-farnesyl diphosphate <=> (E)-beta-farnesene + diphosphate
(2e,6e)-farnesyl diphosphate <=> (e)-beta-farnesene + diphosphate
(2E,6E)-farnesyl diphosphate <=> (E)-beta-farnesene + diphosphate
(2e,6e)-farnesyl diphosphate <=> (e)-beta-farnesene + diphosphate