You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
methyl N-[(2S,3S)-1-[(2S,5S)-2-[17-[2-[(2S,5S)-1-[(2S,3R)-3-methoxy-2-(methoxycarbonylamino)butanoyl]-5-methylpyrrolidin-2-yl]-1H-imidazol-5-yl]-21-oxa-7-azapentacyclo[11.8.0.03,11.04,8.014,19]henicosa-1(13),2,4(8),6,9,11,14(19),15,17-nonaen-6-yl]-5-methylpyrrolidin-1-yl]-3-methyl-1-oxopentan-2-yl]carbamate is the IUPAC name of a molecule. Please give its molecular formula.
user
C47H57N7O8
assistant