Cc1cc(C)cc(OCC(O)CN2CCC(CN3C(=O)c4cccc5cccc(c45)C3=O)CC2)c1.Cl
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?