You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(3'R,4S,6'R,7'R,10'S,11'S,12'R)-7'-[[(9aR)-3,4,6,7,9,9a-hexahydro-1H-pyrazino[2,1-c][1,4]oxazin-8-yl]methyl]-7-chloro-8-fluoro-7'-hydroxy-11',12'-dimethylspiro[2,3-dihydro-1H-naphthalene-4,22'-20-oxa-1,14-diazapentacyclo[14.7.2.18,10.03,6.019,24]hexacosa-8,16(25),17,19(24)-tetraene]-15'-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C42H54ClFN4O4
assistant