You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named (3'R,4S,6'R,7'S,8'Z,12'R)-7'-amino-7-chloro-12'-methyl-13',13'-dioxospiro[2,3-dihydro-1H-naphthalene-4,22'-20-oxa-13lambda6-thia-1,14-diazatetracyclo[14.7.2.03,6.019,24]pentacosa-8,16(25),17,19(24)-tetraene]-15'-one is given. What is its corresponding molecular formula?
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C31H38ClN3O4S
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