CC(=O)NC1C(OCc2ccccc2)OC(CO)C(O)C1OCC(=O)NC(C)C(=O)NC(CCC(=O)OCCNC(=O)c1cccc2cc3ccccc3nc12)C(N)=O
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?