COCCN1C(=O)c2[nH]nc(-c3c(C)cc(C)cc3O)c2C1c1cccc(O)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?