You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2R)-3-(4-chlorophenyl)-2-[[2-[3-(4-fluorophenyl)-5,9-dimethyl-7-oxofuro[3,2-g]chromen-6-yl]acetyl]amino]propanoic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C30H23ClFNO6
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