C[C@H]1CCCCO[C@@H](CN(C)C(=O)c2ccccc2)[C@H](C)CN([C@@H](C)CO)C(=O)c2cc(NC(=O)Nc3cccc4ccccc34)ccc2O1
A rotatable bond is defined as any single non-ring bond, attached to a non-terminal, non-hydrogen atom. How many bonds in the molecule are rotatable?