O=C(CCC(=O)N(CC(=O)NC1CCCC1)Cc1ccc2c(c1)OCO2)Nc1ccccn1
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?