You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 2-[(2S,3R,4S,5S,6S)-3,5-bis(carboxylatomethyl)-2-(4-formyl-3-hydroxyphenoxy)-6-methoxycarbonyloxan-4-yl]acetate into its molecular formula.
user
C20H19O12-3
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