  The Large Hadron Collider (LHC) aims to inject oxygen (${}^{16}O$) ions in
the next run into its experiments. This include the anticipated one-day physics
run focusing on $OO$ collisions at center-of-mass energy \sqrt{s_{\mathrm{NN}}
= 7 Tev. In this study, we have used recently developed version of the EPOS
(EPOS4) to study the production of identified particles ($\pi^\pm$, $K^\pm$ and
$p(\overline{p})$) in $OO$ collisions at 7 Tev. Predictions of transverse
momentum ($p_T$) spectra, $\langle p_T \rangle$, integrated yield (dN/dy) for
different centrality classes are studied. To provide insight into the
collective nature of the produced particles, we look into the
$p_T$-differential particle ratios ($K/\pi$ and $p/\pi$) and $p_T$-integrated
particle ratios to ($\pi^++\pi^-$) as a function of charge particle
multiplicity. The shape of the charge particle multiplicity ($dN/d\eta$) and
$\langle p_T \rangle$ is well described by the EPOS4. The EPOS4 predictions for
the ratios of $K/\pi$ and $p/\pi$ exhibit a systematic overestimation compared
to the observed trends as a function of charged-particle multiplicity.
Interestingly, the $OO$ results of $p_T$-integrated particle ratios shows a
clear final state multiplicity overlap with $pp$, $p-Pb$ and $Pb-Pb$
collisions. EPOS4 mimics signs of collectivity and is one of the suitable
candidates to study ultra-relativistic heavy-ion collisions. Furthermore, the
foreseen data from $OO$ collisions at the LHC, when available, will help to
better understand the heavy-ion-like behavior in small systems as well as help
to put possible constraints on the model parameters.
