You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
tetrasodium;(2R,3R,4S)-4-hydroxy-2-[(3R,4R,5R,6R)-2-hydroxy-3-(1-oxidoethylideneamino)-6-(sulfonatooxymethyl)-5-sulfooxyoxan-4-yl]oxy-3-sulfonatooxy-3,4-dihydro-2H-pyran-6-carboxylate is the IUPAC name of a molecule. Please give its SMILES representation.
user
CC([O-])=NC1C(O)OC(COS(=O)(=O)[O-])C(OS(=O)(=O)O)C1OC1OC(C(=O)[O-])=CC(O)C1OS(=O)(=O)[O-];[Na+];[Na+];[Na+];[Na+]
assistant