You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 9H-fluoren-9-ylmethyl N-[(2R)-5-[(N'-methylcarbamimidoyl)amino]-1-[[(1S)-3-methyl-1-(5-phenyl-1,3-oxazol-2-yl)butyl]amino]-1-oxopentan-2-yl]carbamate;sulfane by IUPAC nomenclature, provide its molecular formula.
user
C36H44N6O4S
assistant