6-<(benzyloxy)carbonyl>-2,4-bis(2-chloroethyl)-7-<2-(methoxycarbonyl)ethyl>-1,3,5,8,-tetramethylporphyrin
6-<(benzyloxy)carbonyl>-2,4-bis(2-hydroxyethyl)-7-<2-(methoxycarbonyl)ethyl>-1,3,5,8,-tetramethylporphyrin
4,6-bis(2-acetoxyethyl)-6-<(benzyloxy)carbonyl>-7-<2-(methoxycarbonyl)ethyl>-1,3,5,8,-tetramethylporphyrin