You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
methyl N-[1-[2-[5-[6-[1-[2-(methoxycarbonylamino)-3-methylbutanoyl]-5-methylpyrrolidin-2-yl]-21-oxa-5,7-diazapentacyclo[11.8.0.03,11.04,8.014,19]henicosa-1(13),2,4(8),5,9,11,14(19),15,17-nonaen-17-yl]-1H-imidazol-2-yl]-5-methylpyrrolidin-1-yl]-1-oxopropan-2-yl]carbamate is the IUPAC name of a molecule. Please give its molecular formula.
user
C43H50N8O7
assistant