You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(3'R,4S,6'R,7'S,8'E,12'R)-7-chloro-12'-(ethoxymethyl)-7'-hydroxy-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;(3'R,4S,6'R,7'S,8'E,12'S)-7-chloro-12'-(ethoxymethyl)-7'-hydroxy-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 the IUPAC name of a molecule. Please give its molecular formula.
user
C66H82Cl2N4O12S2
assistant