Cc1cc(C)cc(NC(=O)CC23CC4CC(C2)CC(n2nnc(C)n2)(C4)C3)c1
A rotatable bond is defined as any single non-ring bond, attached to a non-terminal, non-hydrogen atom. Amide C-N bonds are not counted because of their high barrier to rotation.  How many rotatable bonds does the molecule have?