CSc1ccc(CCNC(=O)c2ccc(-c3nc(COc4ccc(C)cc4)c(C)o3)cc2)cc1
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?