You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule [(1R,3S,11R,12R,14R,26R)-22-acetyloxy-12-cyano-5-hydroxy-6,7'-dimethoxy-7,21-dimethyl-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]-6'-yl] butanoate .
user
C43H46N4O11S
assistant