You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(4R,10S,19S)-15-(furan-3-carbonyl)-4-(1H-indol-3-ylmethyl)-6,10,12-trimethyl-19-(2-methylpropyl)-21-thia-3,6,9,12,15,18,23-heptazabicyclo[18.2.1]tricosa-1(22),20(23)-diene-2,5,8,11,17-pentone is the IUPAC name of a molecule. Please give its molecular formula.
user
C36H44N8O7S
assistant