You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 2,3-bis[4-[4-(3-ethoxy-3-oxoprop-1-en-2-yl)phenoxy]butanoyloxy]propyl 4-[4-(3-ethoxy-3-oxoprop-1-en-2-yl)phenoxy]butanoate into molecular formula.
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C48H56O15
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