C=CCN1c2ccccc2[C@]23C[C@@H](C(=O)OC)N(C(=O)c4ccc(Br)cc4)C2=NC(C(=O)OC)=C(C(=O)OC)[C@H]13
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?