You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule identified by (15S,18S)-18-tert-butyl-N-[(2R)-1-(cyclopropylsulfonylcarbamoyl)-2-(difluoromethyl)cyclopropyl]-17,20-dioxo-12,21,25-trioxa-16,19-diazapentacyclo[24.3.1.113,16.02,11.04,9]hentriaconta-1(30),2,4,6,8,10,26,28-octaene-15-carboxamide ?
user
C39H44F2N4O9S
assistant