You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(3R,3'Z,6R,7S,11S,12R,22S)-3'-[(E)-2-chlorobut-2-enylidene]-7-hydroxy-11,12-dimethyl-2'-methylidene-13,13-dioxo-7-(2-oxo-2-piperidin-1-ylethyl)spiro[20-oxa-13lambda6-thia-1,14-diazatetracyclo[14.7.2.03,6.019,24]pentacosa-16(25),17,19(24)-triene-22,1'-cyclohexane]-15-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C40H56ClN3O6S
assistant