368-39-8 Boron tetrafluoride triethyl oxonium NSC176023 Oxonium, triethyl-, tetrafluoroborate(1-) Triethoxonium fluoroborate Triethyloxonium borofluoride Triethyloxonium fluoborate Triethyloxonium fluoroborate Triethyloxonium tetrafluoroborate Triethyloxonium tetrafluoroborate(1-)