You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (2R,4S)-3-(phenoxymethyl)-7-(2H-tetrazol-5-yl)-8,9-diazatricyclo[4.3.0.02,4]nona-1(6),7-diene by IUPAC nomenclature, provide its molecular formula.
user
C15H14N6O
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