COc1ccc(CCn2c(=N)c(C(=O)NCc3ccco3)cc3c(=O)n4ccccc4nc32)cc1OC
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?