You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(2S)-5-[(4S,5R)-5-[(1R,9R)-1-bromo-9-hydroxy-21-[(2S)-3-hydroxy-2-(phenylmethoxycarbonylamino)propoxy]henicosyl]-2,2-dimethyl-1,3-dioxolan-4-yl]-1-[[(2R)-2-hydroxy-2-[4-[(2S)-3-hydroxy-2-(propanoylamino)propoxy]phenyl]ethyl]amino]-1-oxopentan-2-yl] (2R)-3,3,3-trifluoro-2-methoxy-2-phenylpropanoate is the IUPAC name of a molecule. Please give its molecular formula.
user
C66H99BrF3N3O15
assistant