label: 1-hexadecanoyl-sn-glycero-3-phosphocholine = 1-hexadecanoyl-sn-glycero-2,3-cyclic phosphate + choline
label_lc: 1-hexadecanoyl-sn-glycero-3-phosphocholine = 1-hexadecanoyl-sn-glycero-2,3-cyclic phosphate + choline