17,18-epoxy-17-hydroxycur-19-ene + malonyl-CoA <=> prestrychnine + CoA
17,18-epoxy-17-hydroxycur-19-ene + malonyl-coa <=> prestrychnine + coa
17,18-epoxy-17-hydroxycur-19-ene + malonyl-CoA <=> prestrychnine + CoA
17,18-epoxy-17-hydroxycur-19-ene + malonyl-coa <=> prestrychnine + coa