COc1ccc(C2CC(=O)Oc3c(C(CCN4CCN(c5ccccc5)CC4)c4cc(OC)c(OC)c(OC)c4)c(OC)cc(OC)c32)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?