A compound having the following formula: wherein: • R a represents H or a (C 1 -C 12)alkyl group, optionally interrupted with one or several oxygen atoms; • L represents a group having the following formula: wherein: - A is an anticancer agent being the monomethyl auristatin E (MMAE); - Y is an electron-withdrawing group; - X is -O-; - G is a glucuronyl radical or is chosen from the glucuronide ester radicals; - L 1 represents a linker represented by the following formula: -A 1 -A 2 -A 3 -A 4 -A 5 -A 6 -A 7 - wherein:. A 1 is an (C 1 -C 6)alkylene radical;. A 2 is a group obtainable by click chemistry being a triazole radical;. A 3 is an (C 1 -C 6)alkylene radical;. A 4 is chosen from the group consisting of: -C(=O)-NR b -, -C(=S)-NR b -, -NR b -C(=O)-, -NR b -C(=S)-, and NR b, R b representing H or a (C 1 -C 12)alkyl group;. A 5 is an (C 1 -C 32)alkylene radical interrupted by at least on oxygen atom;. A 6 is a group obtainable by click chemistry being a triazole radical;. A 7 is an (C 1 -C 6)alkylene radical; • L' represents a group having the following formula: -A 8 -A 9 -L" wherein:. A 8 is an (C 1 -C 6)alkylene radical interrupted by at least one oxygen atom;. A 9 is chosen from the group consisting of: -NR c -, -O-, and -S-, R c representing H or a (C 1 -C 12)alkyl group; and. L" is a radical capable of reacting with an amino, hydroxyl or thiol function, wherein L" is a maleimidocaproyl group; or a pharmaceutically acceptable salt thereof, or a racemate, diastereomer or enantiomer thereof. • R a represents H or a (C 1 -C 12)alkyl group, optionally interrupted with one or several oxygen atoms; • L represents a group having the following formula: wherein: - A is an anticancer agent being the monomethyl auristatin E (MMAE); - Y is an electron-withdrawing group; - X is -O-; - G is a glucuronyl radical or is chosen from the glucuronide ester radicals; - L 1 represents a linker represented by the following formula: -A 1 -A 2 -A 3 -A 4 -A 5 -A 6 -A 7 - wherein:. A 1 is an (C 1 -C 6)alkylene radical;. A 2 is a group obtainable by click chemistry being a triazole radical;. A 3 is an (C 1 -C 6)alkylene radical;. A 4 is chosen from the group consisting of: -C(=O)-NR b -, -C(=S)-NR b -, -NR b -C(=O)-, -NR b -C(=S)-, and NR b, R b representing H or a (C 1 -C 12)alkyl group;. A 5 is an (C 1 -C 32)alkylene radical interrupted by at least on oxygen atom;. A 6 is a group obtainable by click chemistry being a triazole radical;. A 7 is an (C 1 -C 6)alkylene radical; - A is an anticancer agent being the monomethyl auristatin E (MMAE); - Y is an electron-withdrawing group; - X is -O-; - G is a glucuronyl radical or is chosen from the glucuronide ester radicals; - L 1 represents a linker represented by the following formula: -A 1 -A 2 -A 3 -A 4 -A 5 -A 6 -A 7 - wherein:. A 1 is an (C 1 -C 6)alkylene radical;. A 2 is a group obtainable by click chemistry being a triazole radical;. A 3 is an (C 1 -C 6)alkylene radical;. A 4 is chosen from the group consisting of: -C(=O)-NR b -, -C(=S)-NR b -, -NR b -C(=O)-, -NR b -C(=S)-, and NR b, R b representing H or a (C 1 -C 12)alkyl group;. A 5 is an (C 1 -C 32)alkylene radical interrupted by at least on oxygen atom;. A 6 is a group obtainable by click chemistry being a triazole radical;. A 7 is an (C 1 -C 6)alkylene radical;. A 1 is an (C 1 -C 6)alkylene radical;. A 2 is a group obtainable by click chemistry being a triazole radical;. A 3 is an (C 1 -C 6)alkylene radical;. A 4 is chosen from the group consisting of: -C(=O)-NR b -, -C(=S)-NR b -, -NR b -C(=O)-, -NR b -C(=S)-, and NR b, R b representing H or a (C 1 -C 12)alkyl group;. A 5 is an (C 1 -C 32)alkylene radical interrupted by at least on oxygen atom;. A 6 is a group obtainable by click chemistry being a triazole radical;. A 7 is an (C 1 -C 6)alkylene radical; • L' represents a group having the following formula: -A 8 -A 9 -L" wherein:. A 8 is an (C 1 -C 6)alkylene radical interrupted by at least one oxygen atom;. A 9 is chosen from the group consisting of: -NR c -, -O-, and -S-, R c representing H or a (C 1 -C 12)alkyl group; and. L" is a radical capable of reacting with an amino, hydroxyl or thiol function, wherein L" is a maleimidocaproyl group;. A 8 is an (C 1 -C 6)alkylene radical interrupted by at least one oxygen atom;. A 9 is chosen from the group consisting of: -NR c -, -O-, and -S-, R c representing H or a (C 1 -C 12)alkyl group; and. L" is a radical capable of reacting with an amino, hydroxyl or thiol function, wherein L" is a maleimidocaproyl group;