You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 4-[(1S,9S,10S,15R,16R,17S)-16-(4-hydroxybutyl)-10-naphthalen-2-ylsulfanyl-4-(3-nitrophenoxy)-12-[(4-nitrophenyl)methoxyimino]-9-prop-2-enoxy-8-oxatetracyclo[7.7.1.02,7.013,17]heptadeca-2(7),3,5,13-tetraen-15-yl]butan-1-ol by IUPAC nomenclature, provide its molecular formula.
user
C50H51N3O10S
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