COc1ccc([C@H]2[C@H](C(C)=O)N3N=Cc4ccccc4C3C23C(=O)OC(C)(C)OC3=O)cc1
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?