(E)-caffeoylpyruvate + hnu + CO2 => 3-hydroxyhispidin + O2
(e)-caffeoylpyruvate + hnu + co2 => 3-hydroxyhispidin + o2
(E)-caffeoylpyruvate + hnu + CO2 => 3-hydroxyhispidin + O2
(e)-caffeoylpyruvate + hnu + co2 => 3-hydroxyhispidin + o2