CSc1ncc(/C=C2/C(=O)NC(=O)N(c3ccc(C(C)C)cc3)C2=O)cn1
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?