target_seduce_outcome_sex_effect

 target_seduce_outcome_sex_effect = {
	scope:target = {
		if = {
			limit = {
				NAND = {
					scope:owner = { is_ai = no }
					scope:target = { is_ai = yes }
				}
			}
			had_sex_with_effect = {
				CHARACTER = scope:owner
				PREGNANCY_CHANCE = seduce_pregnancy_chance
			}
		}
		else = {
			show_as_tooltip = {
				had_sex_with_effect = {
					CHARACTER = scope:owner
					PREGNANCY_CHANCE = seduce_pregnancy_chance
				}
			}
		}
	}
}

As written in game/common/scripted_effects/00_scheme_scripted_effects.txt.