You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(3R,7R,9R,12S)-12-[(2R,4R,5S)-5-amino-4-ethyl-4-methoxy-6-methyloxan-2-yl]oxy-9-hydroxy-4,5,7,9,11,13-hexamethyl-14-oxo-1-thia-5-azacyclotetradec-3-yl] ethyl carbonate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C30H56N2O8S
assistant