COc1ccc(NC(=O)N2CCc3nc(COc4ccccc4)c4c(c3C2)CO[C@@H](C)C4)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?