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system
ethyl 4-[[2-(cyclopropylmethoxy)pyridin-4-yl]-(4-methylpiperazin-1-yl)methyl]-5-hydroxy-2-methylbenzo[g][1]benzofuran-3-carboxylate;ethyl 4-[(2-cyclopropyloxypyridin-4-yl)-(4-methylpiperazin-1-yl)methyl]-5-hydroxy-2-methylbenzo[g][1]benzofuran-3-carboxylate;ethyl 4-[[2-(2,2-dimethylpropoxy)pyridin-4-yl]-(4-methylpiperazin-1-yl)methyl]-5-hydroxy-2-methylbenzo[g][1]benzofuran-3-carboxylate;ethyl 5-hydroxy-2-methyl-4-[(4-methylpiperazin-1-yl)-(2-phenoxypyridin-4-yl)methyl]benzo[g][1]benzofuran-3-carboxylate The above is the IUPAC name of a molecule. Write its molecular formula.
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C126H140N12O20
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