1 S7B 2-[(cyclopropylcarbonyl)oxy]-3-methylbenzoic acid 1.000 2 M3S 2-(acetyloxy)-3-methylbenzoic acid 0.765 3 S3B 3-methyl-2-(propanoyloxy)benzoic acid 0.722 4 AIN 2-(acetyloxy)benzoic acid 0.706