<Li> InChI = 1S / N4Si3 / c1 - 5 - 2 - 6 (1) 3 (5) 7 (1, 2) 4 (5) 6 Key: HQVNEWCFYHHQES - UHFFFAOYSA - N </Li> <Li> InChI = 1 / N4Si3 / c1 - 5 - 2 - 6 (1) 3 (5) 7 (1, 2) 4 (5) 6 Key: HQVNEWCFYHHQES - UHFFFAOYAJ </Li> <Tr> <Td_colspan="2"> SMILES (show) <Ul> <Li> N13 (Si) 25N4 (Si) 16N2 (Si) 34N56 </Li> </Ul> </Td> </Tr> <Ul> <Li> N13 (Si) 25N4 (Si) 16N2 (Si) 34N56 </Li> </Ul>

What is the percent composition of silicon nitride (si3n4)