Cadence IC 6.16 error - GLIBC 2.23 not found in Ubuntu 16.04 LTS

[unix_amr]

Hi all
I am trying to run Cadence IC 6.16 through terminal (. .bashrc), but facing this error:

/bin/ksh: /lib/libm.so.6: version `GLIBC_2.23' not found (required by /bin/ksh)


And by typing ldd -v /bin/sh in terminal, I get this results:

linux-vdso.so.1 (0x00007ffd746c2000)
    libc.so.6 => /lib/libc.so.6 (0x00007f131e437000)
    /lib64/ld-linux-x86-64.so.2 (0x00007f131ea0a000)

    Version information:
    /bin/sh:
        libc.so.6 (GLIBC_2.3) => /lib/libc.so.6
        libc.so.6 (GLIBC_2.11) => /lib/libc.so.6
        libc.so.6 (GLIBC_2.3.4) => /lib/libc.so.6
        libc.so.6 (GLIBC_2.14) => /lib/libc.so.6
        libc.so.6 (GLIBC_2.4) => /lib/libc.so.6
        libc.so.6 (GLIBC_2.2.5) => /lib/libc.so.6
    /lib/libc.so.6:
        ld-linux-x86-64.so.2 (GLIBC_2.3) => /lib64/ld-linux-x86-64.so.2
        ld-linux-x86-64.so.2 (GLIBC_PRIVATE) => /lib64/ld-linux-x86-64.s

I would be so grateful if you could help me.

P.S. My system spec: Ubuntu 16.04 LTS