CN(C)[C@@H](CO)c1nnc([C@H](CCC(=O)O)NC(=O)C2CCNCC2)o1.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?