O-Alkyl hydroxylamines (with or without substitution on $\ce{N}$) $\ce{R'ONR2}$ ($\ce{R'\neq H}$).
Source: PAC, 1995, 67, 1307. (Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)) on page 1314 [Terms] [Paper]