You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(1R,3S,11R,12R,14S,26R)-12-cyano-5,6'-diethoxy-6,7'-dimethoxy-7,21,30-trimethyl-27-oxospiro[17,19,28-trioxa-24-thia-13,30-diazaheptacyclo[12.9.6.13,11.02,13.04,9.015,23.016,20]triaconta-4(9),5,7,15,20,22-hexaene-26,1'-3,4-dihydro-2H-isoquinoline]-22-yl] acetate is the IUPAC name of a molecule. Please give its molecular formula.
user
C44H50N4O10S
assistant