Cc1ccc(-c2cc(C(=O)OCC(=O)N(C)c3c(N)n(Cc4ccccc4)c(=O)[nH]c3=O)c3ccccc3n2)o1
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?