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 1,10,11,12a-tetrahydroxy-7-[2-methoxy-5-(morpholin-4-ylmethyl)phenyl]-3,12-dioxo-4a,5,5a,6-tetrahydro-4H-tetracene-2-carboxamide into molecular formula.
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C31H32N2O9
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