Damages action seeking collection of a penalty for default under a sugarcane purchase and sale contract. Existence of an arbitration clause and a forum selection clause. Arbitration clause that is valid but inapplicable to the case, as it relates solely to the "assessment of the quality of the sugarcane and determination of its price" and expressly excludes from its scope disputes concerning default under the contract. Jurisdiction of the judiciary, subject to the forum selection clause, which is valid due to the absence of a consumer relationship: