(2Z,6Z)-farnesyl diphosphate => germacrene C + diphosphate
(2z,6z)-farnesyl diphosphate => germacrene c + diphosphate
(2Z,6Z)-farnesyl diphosphate => germacrene C + diphosphate
(2z,6z)-farnesyl diphosphate => germacrene c + diphosphate