  Multiple loop formation in polymer macromolecules is an important feature of
the chromatin organization and DNA compactification in the nuclei. We analyze
the size and shape characteristics of complex polymer structures, containing in
general $f_1$ loops (petals) and $f_2$ linear chains (branches). Within the
frames of continuous model of Gaussian macromolecule, we apply the path
integration method and obtain the estimates for gyration radius $R_g$ and
asphericity $\hat{A}$ of typical conformation as functions of parameters $f_1$,
$f_2$. In particular, our results qualitatively reveal the extent of anisotropy
of star-like topologies as compared to the rosette structures of the same total
molecular weight.
