Cc1cc(=O)oc2c(C)c(OC(C)C(=O)Nc3ccc(N4CCC(C)CC4)cc3)ccc12
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?