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| # | Species | Formula |
| 202 | Benzyl, cation | C7H7 | |
| 203 | Tropylium, cation | C7H7 | |
| 204 | Cycloheptatriene | C7H8 | |
| 205 | Norbornadiene | C7H8 | |
| 206 | Toluene | C7H8 | |
| 207 | 1,2-Dimethyl cyclopentene | C7H12 | |
| 208 | 1-Ethyl cyclopentene | C7H12 | |
| 209 | 1-Methyl cyclohexene | C7H12 | |
| 210 | Norbornane | C7H12 | |
| 211 | 1,1-Dimethyl cyclopentane | C7H14 | |
| 212 | 1,2-cis-Dimethyl cyclopentane | C7H14 | |
| 213 | 1,2-trans-Dimethyl cyclopentane | C7H14 | |
| 214 | 1,3-cis-Dimethyl cyclopentane | C7H14 | |
| 215 | 1-Heptene | C7H14 | |
| 216 | Ethyl cyclopentane | C7H14 | |
| 217 | Methyl-cyclohexane | C7H14 | |
| 218 | 2,2,3-Trimethyl butane | C7H16 | |
| 219 | 2,2-Dimethyl pentane | C7H16 | |
| 220 | 2,3-Dimethyl pentane | C7H16 | |
| 221 | 2,4-Dimethyl pentane | C7H16 | |
| 222 | 2-Methyl hexane | C7H16 | |
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