You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (3R,9R,12S,15S,17R)-17-hydroxy-3-(1H-indol-3-ylmethyl)-12-methyl-9-phenyl-7-(3-pyridin-4-ylpropanoyl)-1,4,7,10,13-pentazabicyclo[13.3.0]octadecane-2,5,11,14-tetrone by IUPAC nomenclature, provide its molecular formula.
user
C37H41N7O6
assistant