CC(C)CCCC(C)C1CCC2C3CC=C4CC(=O)CC[C@@]4(C)C3CC[C@@]12C
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?