You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2S,4aS,6aR,6aS,6bR,8aR,10S,12aS,14bR)-10-[(2R,3R,4S,5S,6S)-6-[[(2S)-1,4-dimethoxy-1,4-dioxobutan-2-yl]carbamoyl]-3-[(2R,3R,4S,5S,6S)-6-[[(2S)-1,4-dimethoxy-1,4-dioxobutan-2-yl]carbamoyl]-3,4,5-trihydroxyoxan-2-yl]oxy-4,5-dihydroxyoxan-2-yl]oxy-2,4a,6a,6b,9,9,12a-heptamethyl-13-oxo-3,4,5,6,6a,7,8,8a,10,11,12,14b-dodecahydro-1H-picene-2-carboxylic acid The above is the IUPAC name of a molecule. Write its molecular formula.
user
C54H80N2O22
assistant