Cc1cccc(N2CCN(C(=O)C(C)n3nc(C)n4c(cc5occc54)c3=O)CC2)c1C
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?