You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named (1R,18R,20R,24S,27S,28S)-24-tert-butyl-7-methoxy-20,28-dimethyl-22,25-dioxo-2,21-dioxa-4,11,23,26-tetrazapentacyclo[24.2.1.03,12.05,10.018,20]nonacosa-3,5(10),6,8,11-pentaene-27-carbaldehyde is given. What is its corresponding molecular formula?
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C31H42N4O6
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