C17H13N5OExact Mass: 303.11Mol. Wt.: 303.32m/e: 303.11 (100.0%), 304.12 (18.6%), 304.11 (1.8%), 305.12 (1.8%)C, 67.32; H, 4.32; N, 23.09; O, 5.27
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