The following page provides a functionality to quickly decompose a single fragmentation spectrum only (alternatively, to decompose all spectra in a dataset, please create a "Decomposition" experiment from the Experiments page).
Enter the mass of the parent ion and the spectrum in the "Parentmass" and "Spectrum" fields, and choose a set of Mass2Motifs to decompose against in the "Motifset" field. Spectrum should be entered as pairs of mass intensity values with the mass and intensity separated by a colon (:) or a space ( ). Pairs should be separated by a space, or a newline. An example is provided below.