COc1cc2c(cc1OCCCCCOc1cc3c(cc1OC)C(=O)N1CCC[C@H]1CN3)N=C[C@@H]1CCCN1C2=O
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?