COC1=C(N)C(=O)C2=C(CCC(c3nc(C(=O)O)c(C)c(-c4ccc(OC)c(OC)c4O)c3N)N2)C1=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?