CCOC(=O)c1c(NC(C)=O)c2c3c(sc2n1Cc1nc(-c2ccccc2Cl)oc1C)CCCC3
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?