CC[C@@H](C)[C@H](NC(=O)Cc1c(C)c2c(cc(C)c3c(C)c(C)oc32)oc1=O)C(=O)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?