CC(=O)OC[C@]12CCC3[C@@]4(C)CCCC(C)(C)C4CC[C@@]3(C)C1CC(C1=CC(=O)OC1O)O2
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?