Fuente: WIPO "tomato" The present invention relates a compound of formula (Ia), (Ib), (Ie), or (If), as defined in the appended claims and description. The present invention also relates to the use of a compound of formula (Ia), (Ib), (Ie), or (If), as defined in the appended claims and description, for inducing resistance against stress in plants and/or parts thereof. The present invention also relates to the use of a compound of formula (I1), as defined in the appended claims and description, for inducing resistance against stress in plants and/or parts thereof. The present invention also relates to a plant seed coated with at least one compound as defined in the appended claims and description, or with a coating composition comprising at least one compound as defined in the appended claims and description. The present invention also relates to an agrochemical composition comprising at least one compound as defined in the appended claims and description, and one or more optional agriculturally acceptable excipient.