O=C(c1ccccc1)c1ccc2[nH]c(-c3c(Cl)c(Cl)c(Cl)c(Cl)c3C(=O)N/N=C/c3ccccc3)nc2c1
A rotatable bond is defined as any single non-ring bond, attached to a non-terminal, non-hydrogen atom. How many bonds in the molecule are rotatable?