2'-Carboxy-5-chloro-2,4-dihydroxybenzophenone   、                                                                                      
三氟乙酸   、                                                                                      
4-{2-[7-(bis-tert-butoxycarbonylmethyl-amino)heptyl]-5-methoxyphenyl}piperazine-1-carboxylic acid tert-butyl ester                                                                                                                                                                                                                                                                      反应 120.0h,
                                                                                                                生成                                                 2-{7-[7-(carboxymethyl-amino)-heptyl]-2-chloro-3-oxo-6-piperazin-1-yl-3
H-xanthen-9-yl}-benzoic acid   、                                                                                             2-{7-[7-(bis-carboxymethyl-amino)heptyl]-2-chloro-3-oxo-6-piperazine-1-yl-3H-xanthen-9-yl}benzoic acid bis(trifluoroacetate)