You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
5-[1-[2-[5-[(2-chlorophenyl)methyl]-7,16-dimethyl-6-oxo-5,11,14,15-tetrazapentacyclo[10.8.0.02,10.04,8.013,17]icosa-1(12),2,4(8),9,13,16-hexaen-7-yl]ethoxy]-1-hydroxypropan-2-yl]-7,7,16-trimethyl-5,11,14,15-tetrazapentacyclo[10.8.0.02,10.04,8.013,17]icosa-1(12),2,4(8),9,13,16-hexaen-6-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C49H51ClN8O4
assistant