Find the highest number where:

1: all digits are different

2: the sum of its digits is a 2digit number whose 2 digits do not appear in the number

Example:

number : 754

7 + 5 + 4 = 16 : 1 and 6 do not appear in 754

Find the highest number where:

1: all digits are different

2: the sum of its digits is a 2digit number whose 2 digits do not appear in the number

Example:

number : 754

7 + 5 + 4 = 16 : 1 and 6 do not appear in 754

1: all digits are different

2: the sum of its digits is a 2digit number whose 2 digits do not appear in the number

Example:

number : 754

7 + 5 + 4 = 16 : 1 and 6 do not appear in 754