You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
ethyl (1'S,3R,4'R,7'Z,14'S)-5-ethyl-9-hydroxy-14'-[(2-methylpropan-2-yl)oxycarbonylamino]-2',15'-dioxospiro[1,2-dihydropyrano[2,3-c]quinoline-3,18'-3,16-diazatricyclo[14.3.0.04,6]nonadec-7-ene]-4'-carboxylate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C38H50N4O8
assistant