Cn1cc(CN2C[C@]3(C)C[C@H]2CC(C)(C)C3)c(-c2ccc3c(c2)OCCO3)n1
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?