COc1ccc(N2CC(C)Cn3c2nc2c3c(=O)n(Cc3ccc(C)cc3)c(=O)n2C)c(OC)c1
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?