Get C34 H32 MG N4 O4 = heg = protoporphyrin ix containing mg Get C55 H70 MG N4 O6 2+ = chl = chlorophyll b Get C55 H72 MG N4 O5 = cl1 = alpha chlorophyll a Get C55 H72 MG N4 O5 = cl2 = beta chlorophyll a Get C55 H72 MG N4 O5 = cla = chlorophyll a Get C55 H72 MG N4 O6 = bcb = bacteriochlorophyll b Get C55 H74 MG N4 O6 = bcl = bacteriochlorophyll a