1-Bromo-8,18-bis(2-acetoxyethyl)-3,13-diethyl-2,7,12,17,19-pentamethylbiladiene-ac dihydrobromide

((1Z,4Z,9Z,15Z)-7,17-Diethyl-12-methoxycarbonylmethyl-3,8,13,18-tetramethyl-porphyrin-2-yl)-acetic acid methyl ester