Chemical Name:Mixture of N-ethyl-4-[4-[ethyl[(2RS)-1-(4-methoxyphenyl)propan-2-yl]amino]butoxy]-N-[(2R)-1-(4-methoxyphenyl)propan-2-yl]butan-1-amine and N-ethyl-4-[4-[ethyl[(2RS)-1-(4-methoxyphenyl)propan-2-yl]amino]butoxy]-N-[(2S)-1-(4-methoxyphenyl)propan-2-yl]butan-1-amine (as per EP)
