CCCCCC/C=C/c1ccc(OC)c([C@H]2[C@H]3C=CC[C@@H](C)[C@@H]3C(=O)N2Cc2ccccc2)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?