CREATE TABLE student (id VARCHAR(255), tot_cred VARCHAR(255)); CREATE TABLE advisor (i_id VARCHAR(255), s_id VARCHAR(255)); CREATE TABLE instructor (name VARCHAR(255), id VARCHAR(255))
Find the name of instructor who is the advisor of the student who has the highest number of total credits.
    
SQL: SELECT T2.name FROM advisor AS T1 JOIN instructor AS T2 ON T1.i_id = T2.id JOIN student AS T3 ON T1.s_id = T3.id ORDER BY T3.tot_cred DESC LIMIT 1