C7: 9 isomers: heptane, methylhexane (2 isomers), dimethylpentane (4 isomers), 3-ethylpentane, 2,2,3-trimethylbutane
sˈiː sˈɛvən: nˈaɪn ˈaɪsəmɚz: hˈɛpteɪn, mˈɛθəlhˌɛkseɪn tˈuː ˈaɪsəmɚz, dˈaɪmθɪlpˌɛnteɪn fˈoːɹ ˈaɪsəmɚz, θɹˈiːˈɛθəlpˌɛnteɪn, tˈuː,tˈuː,θɹˈiːtɹˈaɪmɪθəlbjˌuːteɪn