You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named tert-butyl (3R)-3-[5-[7-[1-[[(3S)-3-[(2-methylpropan-2-yl)oxycarbonyl-propylamino]but-1-en-2-yl]amino]ethenyl]dibenzo-p-dioxin-2-yl]-1H-imidazol-2-yl]morpholine-4-carboxylate by IUPAC nomenclature, provide its molecular formula.
user
C38H49N5O7
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