The molecule is a phenolate anion that is the conjugate base of 6-methylpretetramide, obtained by deprotonation of the 1-hydroxy group. It is the major microspecies at pH 7.3 (according to Marvin v 6.2.0.). It is a conjugate base of a 6-methylpretetramide.
2-carbamoyl-3,10,11,12-tetrahydroxy-6-methyltetracen-1-olate