You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule (3S,4R,6S,7S,8R,8aR)-5'-[2-(1-hydroxycycloheptyl)ethynyl]-6-[3-(2-hydroxyethoxy)phenyl]-1'-(2-methoxyethoxycarbonyl)-1,2'-dioxo-3,4-diphenylspiro[4,6,8,8a-tetrahydro-3H-pyrrolo[2,1-c][1,4]oxazine-7,3'-indole]-8-carboxylic acid into molecular formula.
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C48H48N2O11
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