MD5($salt.$pass) hashcat syntax, help?

[com.android.c2dm]

How could i use hashcat to crack this hash?

Syntax:

md5(eWVzX3RoaXNfaXNfdmVyeV9sb25nX3NhbHRfdG9vpassword@123) = 531e89f00f009ced5e0001e33758d3c3

Salt: eWVzX3RoaXNfaXNfdmVyeV9sb25nX3NhbHRfdG9v

Plaintext: password@123

MD5: 531e89f00f009ced5e0001e33758d3c3

I have used following syntax and got Line-length exception error.

Syntax used:

1. hashcat -a 0 -m 0 hash_pass rockyou.txt
2. hashcat -a 0 -m 30 hash_pass rockyou.txt

Error:

Hashfile 'hash_pass' on line 1 (eWVzX3RoaXNfaXNfdmVyeV9sb25nX3NhbHRfdG9vpassword@123): Line-length exception

I know the salt.
I have a wordlist.
I have MD5 of above, i.e. md5($salt.$pass)

I am not sure, how to use hashcat to solve this challenge.

Request help.