You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule tetrasodium;(2S)-2-[(2R,5R,6S)-3-acetamido-2-[(1R,2R)-3-ethyl-2-[(2S,4S,5S)-3,4,5-trihydroxy-6-methyloxan-2-yl]oxy-5-[2-[[(2S,3S)-2,3,4-trisulfonatooxybutanoyl]amino]ethylcarbamoyl]cyclohexyl]oxy-5-hydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-3-cyclohexylpropanoate ?
user
C38H61N3Na4O27S3
assistant