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system
Name the molecular formula for the molecule established as 1-[(1R,2R)-2-methoxycyclopropyl]-3-[(3'R,4S,6'R,7'S,8'E,11'S)-7'-methoxy-7,11'-dimethyl-13',15'-dioxospiro[2,3-dihydro-1H-naphthalene-4,22'-20-oxa-13lambda6-thia-1,14-diazatetracyclo[14.7.2.03,6.019,24]pentacosa-8,13,16(25),17,19(24)-pentaene]-13'-yl]urea using the IUPAC nomenclature.
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C38H50N4O6S
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