2,7,12,17-Tetraethyl-22,24-dihydro-3,8,13,18,21,23-hexamethyl-21H,23H-porphyrin;2,7,12,17-Tetraethyl-3,8,13,18,21,23-hexamethyl-22,24-dihydro-21H,23H-porphyrin
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