You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(7R)-18-[bis[[(2R,3S,4S,5R,6S)-3,4,5-trihydroxy-6-methoxyoxan-2-yl]methyl]amino]-18-oxooctadecan-7-yl] acetate is the IUPAC name of a molecule. Please give its molecular formula.
user
C34H63NO13
assistant