Fluorescent Brightener 134, Technical grade

COC1=NC (=NC (=N1) NC2=CC (=C (C=C2) /C=C/C3=C (C=C (C=C3) NC4=NC (=NC (=N4) NC5=CC=CC=C5) OC) S (=O) (=O) [O-]) S (=O) (=O) [O-]) NC6=CC=CC=C6.[Na+].[Na+]