Figure 7.

HRMS spectrum expansion of component P1 (a). [M + H]⁺ and [M + H + NH₄]²⁺ adducts of the compounds P1A and P1B are highlighted. P1A m/z values for [M + H]⁺ and [M + H + NH₄]²⁺ are 740.4704 and 379.2520, respectively. P1B m/z values for [M + H]⁺ and [M + H + NH₄]²⁺ are 784.4966 and 401.2655, respectively. HRMS spectrum expansions of component P2 (b,c). [M + H]⁺ and [M + H + NH₄]²⁺ adducts of the compounds P2A and P2B are highlighted. P2A m/z values for [M + H]⁺ and [M + H + NH₄]²⁺ are 828.5160 and 423.2756, respectively. P2B m/z values for [M + H]⁺ and [M + H + NH₄]²⁺ are 872.5423 and 445.2887, respectively.