4D NOE-type NMR Experiments

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4D HMQC-NOESY-HMQC
4D HMQC-NOESY-HSQC
4D HSQC-NOESY-HSQC
4D HSQC-NOESY-TROSY
4D TROSY-NOESY-TROSY

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4D HNCOCA-NOESY
4D NOESY-CBCA(CO)NH