As character names:

U+1F4AD THOUGHT BALLOON character (💭)

As raw characters:

💭

As a string of HTML entities:

💭

Decoder output:

Byte number 1 is decimal 240, hex 0xF0, octal \360, binary 11110000
This is the first byte of a 4 byte sequence.

Byte number 2 is decimal 159, hex 0x9F, octal \237, binary 10011111
This is continuation byte 1, expecting 2 more.

Byte number 3 is decimal 146, hex 0x92, octal \222, binary 10010010
This is continuation byte 2, expecting 1 more.

Byte number 4 is decimal 173, hex 0xAD, octal \255, binary 10101101
This is continuation byte 3, expecting 0 more.

U+1F4AD	THOUGHT BALLOON
	x (right thought bubble - 1F5ED)