(+)-(R)-germacrene A + diphosphate => (2E,6E)-farnesyl diphosphate
(+)-(r)-germacrene a + diphosphate => (2e,6e)-farnesyl diphosphate
(+)-(R)-germacrene A + diphosphate => (2E,6E)-farnesyl diphosphate
(+)-(r)-germacrene a + diphosphate => (2e,6e)-farnesyl diphosphate