Resin composition, resin sheet, multilayer printed wiring board, and semiconductor device

A resin composition comprising:

• a maleimide compound (A) represented by the following formula (1);
• a photo initiator (B) having an absorbance of 0.1 or more at a wavelength of 405 nm (h-line);
• and
• a maleimide compound represented by the following formula (18);
• wherein a content of the maleimide compound (A) is 10 to 95 parts by mass based on 100 parts by mass of the resin solid content in the resin composition, and
• wherein a content of the maleimide compound represented by the following formula (18) is 5 to 90 parts by mass based on 100 parts by mass of the resin solid content in the resin composition:
• wherein R1, R2, and R3 each independently represent an alkyl group or an alkoxy group which may have a hydrogen atom, a halogen atom, a hydroxyl group, or a substituent, R4 represents an alkylene group, an alkenylene group, an alkoxylene group, or an arylene group which may have a substituent, and R5 and R6 each independently represent a hydrogen atom, a linear alkyl group having 1 to 6 carbon atoms, a branched alkyl group having 3 to 6 carbon atoms, a linear alkenyl group having 1 to 6 carbon atoms, or a branched alkenyl group having 4 to 6 carbon atoms;
• and
• wherein n7 represents an integer of 1 to 10.