You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named methyl 3-[(1S,2S,3S,5Z,7S,8S,13S,17R,18R)-2,18-bis(2-methoxy-2-oxoethyl)-3,13,17-tris(3-methoxy-3-oxopropyl)-1,2,5,7,12,12,15,17-octamethyl-7-[2-oxo-2-(3-trimethoxysilylpropylamino)ethyl]-3,8,13,18,19,22-hexahydrocorrin-8-yl]propanoate by IUPAC nomenclature, provide its molecular formula.
user
C57H87N5O16Si
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