You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 1-[(4S,7R,8S)-5-acetyl-8-methoxy-4,7,10-trimethyl-11-oxo-2-oxa-5,10-diazabicyclo[10.4.0]hexadeca-1(12),13,15-trien-14-yl]-3-(2-fluorophenyl)urea by IUPAC nomenclature, provide its molecular formula.
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C26H33FN4O5
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