Section 115. Any recordable instrument purporting to affect an interest in real estate, executed in the name of a corporation by the president or a vice president and the treasurer or an assistant treasurer, who may be one and the same person, shall be binding on the corporation in favor of a purchaser or other person relying in good faith on such instrument notwithstanding inconsistent provisions of the articles of organization, certificate of incorporation, charter, special act of incorporation, constitution, by-laws, resolutions or votes of the corporation.