Consider the following premises. For all z, if z were a sailor, then z is climbing a mountain. For all z, if z climbs a mountain, then z is a musician. There is at least one z for which if z were a musician, then z is a sailor. Can we infer the following from them? If we can, name the inference rule being used: For all z, the fact that z were a sailor does not imply that z is a musician.
That contradicts the premises. Therefore the answer is no.