Difference between CEL HDROL and Halo Extreme?

[Lajna]

Hey guys, the reason I ask this question is because most logs are done using CEL's hdrol, so I know what to expect from that from the 100s of logs out there, but there aren't many logs on Halo Extreme. When I look at the compound they are very similar but slightly different

CEL H Drol: 4-chloro-17a-methyl-androst-1,4-diene-3-17b-diol
IML Halo Extreme: 4-chloro-17a-methyl-androst-1,4-dine-3, 17b-dione

What exactly does that difference mean?