2 (E)-4-coumaroyl-CoA + spermidine => N(1),N(8)-bis(coumaroyl)-spermidine + 2 CoA + 2 H(+)
2 (e)-4-coumaroyl-coa + spermidine => n(1),n(8)-bis(coumaroyl)-spermidine + 2 coa + 2 h(+)
2 (E)-4-coumaroyl-CoA + spermidine => N(1),N(8)-bis(coumaroyl)-spermidine + 2 CoA + 2 H(+)
2 (e)-4-coumaroyl-coa + spermidine => n(1),n(8)-bis(coumaroyl)-spermidine + 2 coa + 2 h(+)