You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule bis(3-phenylpropyl) 9,9-dichlorofluorene-2,7-dicarboxylate;dibenzyl 9,9-dichlorofluorene-2,7-dicarboxylate .
user
C62H48Cl4O8
assistant