label: N(epsilon)-(5'-guanylyl)-N(alpha)-acetyl-L-lysine methyl ester + H2O = N(alpha)-acetyl-L-lysine methyl ester + GMP
label_lc: n(epsilon)-(5'-guanylyl)-n(alpha)-acetyl-l-lysine methyl ester + h2o = n(alpha)-acetyl-l-lysine methyl ester + gmp