C=CC[C@@H]1CC=C[C@@H](C)N1C(=O)c1cc(COc2cc(C)ccc2C)on1
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?