You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 6-[3'-[3-[5-[4-[5-[5-carboxy-3-[3'-[3,5-dimethyl-5-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]-2-bicyclo[2.2.1]heptanyl]-2,5'-spirobi[bicyclo[2.2.1]heptane]-2'-yl]-6-[2-(3-hydroxy-2,2-dimethylpropoxy)-2-oxoethyl]-5-methyl-2-bicyclo[2.2.1]heptanyl]-3-methyl-6-(4-methyl-2,5-dioxooxolan-3-yl)bicyclo[2.2.1]heptane-2-carbonyl]oxy-2,3,3,4-tetramethylpentan-2-yl]oxycarbonyl-3-(4-methyl-2,5-dioxooxolan-3-yl)-2-bicyclo[2.2.1]heptanyl]-5-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]-2-bicyclo[2.2.1]heptanyl]-2,5'-spirobi[bicyclo[2.2.1]heptane]-2'-yl]-3-[2-(3-hydroxy-2,2-dimethylpropoxy)-2-oxoethyl]-2,5-dimethylbicyclo[2.2.1]heptane-2-carboxylic acid;methane into molecular formula.
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C143H260O24
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