You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-ethoxycarbonyloxyethyl 3-[4-[1-(4-carbamimidoylphenyl)-3-methoxy-5-oxo-2H-pyrrol-4-yl]phenyl]propanoate is the IUPAC name of a molecule. Please give its molecular formula.
user
C26H29N3O7
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