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Under IUPAC nomenclature, a molecule named 3-(4-ethylphenyl)-1-[2-[4-(furan-2-yl)-4H-pyrrolo[1,2-a]quinoxalin-5-yl]-2-oxoethyl]-1-propan-2-ylurea is given. What is its corresponding molecular formula?
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C29H30N4O3
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