CNCCN[C@@H]1c2cc3c(cc2[C@@H](c2cc(OC)c(O)c(OC)c2)[C@H]2C(=O)OC[C@H]12)OCO3.Cl
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?