Table 1. ESI-MS² Data of Identified or Annotated Bromotyrosine Spiroisoxazolines Present in the Sponge Extract and Reproducibly Detected as EMs.

^aThe cluster index identifies nodes in the GNPS molecular network, the most intense peak of the isotopic pattern was used for feature codification.

^bSingle node.

^cThe monoisotopic peak was selected for molecular formula determination.

^dMajor MS² fragments and their intensities were selected using the GNPS Metabolomics USI tool. N = noisy MS² spectra.

^eConfidence level of metabolite identification according to Schymansky et al.⁶² See Supporting Information S6.