I tried to install rMATS through conda using the command:

conda install -c bioconda rmats

Following error appears:

 UnsatisfiableError: The following specifications were found to be in conflict:
      - pexpect
      - rmats
Use "conda info <package>" to see the dependencies for each package.

MY system info is

Architecture:          x86_64
CPU op-mode(s):        32-bit, 64-bit
Byte Order:            Little Endian
CPU(s):                32
On-line CPU(s) list:   0-31
Thread(s) per core:    2
Core(s) per socket:    8
Socket(s):             2
NUMA node(s):          2
Vendor ID:             GenuineIntel
CPU family:            6
Model:                 79
Model name:            Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
Stepping:              1
CPU MHz:               1245.000
CPU max MHz:           2100.0000
CPU min MHz:           1200.0000
BogoMIPS:              4195.04

How to fix it? Thanks