Measurement of cross sections of the interactions $e^{+}{e}^{-}\to \varphi \varphi \omega$ and $e^{+}{e}^{-}\to \varphi \varphi \varphi$ at center-of-mass energies from 4.008 to 4.600 GeV

Using data samples collected with the BESIII detector at the BEPCII collider at six center-of-mass energies between 4.008 and 4.600 GeV, we observe the processes $e^{+}{e}^{-}\to \varphi \varphi \omega$ and $e^+e^-\rightarrow \phi\phi\phi$. The Born cross sections are measured and the ratio of the cross sections $\sigma(e^+e^-\rightarrow \phi\phi\omega)/\sigma(e^+e^-\rightarrow \phi\phi\phi)$isestimatedtobe$1.75\pm0.22\pm0.19$ averaged over six energy points, where the first uncertainty is statistical and the second is systematic. The results represent first measurements of these interactions.