You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (1R,8R,9S,12S,13S)-17-[(4-hydroxyphenyl)methyl]-4,11-dimethoxy-17-azatetracyclo[7.5.3.01,10.02,7]heptadeca-2(7),3,5,10-tetraene-3,8,12,13-tetrol by IUPAC nomenclature, provide its molecular formula.
user
C25H29NO7
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