You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule disodium;[(4R,5R)-4-[(1S)-1-acetamido-3-methylbutyl]-5-aminocyclohexen-1-yl]-hydroxyphosphinate;4-methylbenzenesulfonate .
user
C20H31N2Na2O7PS
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